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Expand dataset to 4,428 Fajr records across 88 locations (Batch 5)

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Added 32 new Fajr records from 8 new sites:
- 6 Indonesian cities from Saksono ISRN/UHAMKA 'Premature Dawn' series
  (Padang, Batusangkar, Cirebon, Balikpapan, Bitung, Manokwari) — urban LP,
  D0=-13.4°, 4 seasonal records each
- Tayu Beach, Pati, Central Java — Noor & Hamdani 2018 QIJIS, photoelectric+SQM,
  D0=-17.0°, 4 individual nights Aug-Sep 2016
- Cimahi, West Java — Herdiwijaya 2020, SQM, D0=-18.5°, 4 seasonal records

+8 new unique locations (80 → 88)
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data/processed/fajr_angles.csv
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@ -137,6 +137,10 @@ date,utc_dt,lat,lng,elevation_m,day_of_year,fajr_angle,source,notes
2020-09-23,2020-09-22 21:34:00+00:00,-7.212,107.904,717.0,266,16.54698533045485,"LAPAN SQM 2022 (Damanhuri & Mukarram), Garut West Java Indonesia",Garut LAPAN; SH spring equinox; time inferred
2020-12-22,2020-12-21 21:20:00+00:00,-7.212,107.904,717.0,356,16.676262028422972,"LAPAN SQM 2022 (Damanhuri & Mukarram), Garut West Java Indonesia",Garut LAPAN; SH summer solstice; time inferred
2011-06-21,2011-06-20 21:28:00+00:00,-6.914,107.609,768.0,171,21.78801146175366,"Bandung/Jombang study 2012, AIP Conf. Proc. 1454",SQM observation; Bandung highland site 768m
2017-03-21,2017-03-20 21:42:00+00:00,-6.88,107.53,700.0,79,18.673967709699347,"Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",SQM; D0=-18.5° multi-site mean; 700m highland; spring equinox; time inferred
2017-06-22,2017-06-21 21:42:00+00:00,-6.88,107.53,700.0,172,18.711041976514178,"Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",SQM; D0=-18.5° multi-site mean; 700m highland; summer solstice; time inferred
2017-09-23,2017-09-22 21:27:00+00:00,-6.88,107.53,700.0,265,18.70488968361929,"Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",SQM; D0=-18.5° multi-site mean; 700m highland; autumn equinox; time inferred
2017-12-22,2017-12-21 21:13:00+00:00,-6.88,107.53,700.0,355,18.675021266378824,"Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",SQM; D0=-18.5° multi-site mean; 700m highland; winter solstice; time inferred
2020-03-21,2020-03-20 21:49:00+00:00,-6.855,107.921,556.0,80,16.549466396670855,"LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia",LAPAN station; highland 556m; 6.9°S; semi-rural; time inferred
2020-06-22,2020-06-21 21:50:00+00:00,-6.855,107.921,556.0,173,16.52797008380553,"LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia",Sumedang LAPAN; SH winter; time inferred
2020-09-23,2020-09-22 21:34:00+00:00,-6.855,107.921,556.0,266,16.54406542458467,"LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia",Sumedang LAPAN; SH spring; time inferred
@ -145,6 +149,14 @@ date,utc_dt,lat,lng,elevation_m,day_of_year,fajr_angle,source,notes
2015-06-22,2015-06-21 21:56:00+00:00,-6.825,107.611,1310.0,172,15.382149501475242,"Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia",Photometer; 1310m; southern hemisphere winter; little seasonal variation near equator
2015-09-23,2015-09-22 21:40:00+00:00,-6.825,107.611,1310.0,265,15.469917432309906,"Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia",Photometer; 1310m; autumn equinox; time inferred
2015-12-22,2015-12-21 21:27:00+00:00,-6.825,107.611,1310.0,355,15.479969763220872,"Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia",Photometer; 1310m; southern hemisphere summer; time inferred
2015-03-21,2015-03-20 21:59:00+00:00,-6.72,108.55,5.0,79,13.462837316397685,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
2015-06-22,2015-06-21 22:00:00+00:00,-6.72,108.55,5.0,172,13.563428927399048,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
2015-09-23,2015-09-22 21:44:00+00:00,-6.72,108.55,5.0,265,13.547727176270836,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
2015-12-22,2015-12-21 21:32:00+00:00,-6.72,108.55,5.0,355,13.579904197450766,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
2016-08-11,2016-08-10 21:37:00+00:00,-6.68,111.05,5.0,223,17.145651411206465,"Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period
2016-08-21,2016-08-20 21:34:00+00:00,-6.68,111.05,5.0,233,17.214813906742016,"Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period
2016-09-06,2016-09-05 21:28:00+00:00,-6.68,111.05,5.0,249,17.105103993198686,"Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period
2016-09-16,2016-09-15 21:23:00+00:00,-6.68,111.05,5.0,259,17.104306568613087,"Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period
2021-03-21,2021-03-20 22:05:00+00:00,-6.595,106.789,265.0,79,13.715823254386727,"Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia","Urban LP; SQM; 13.58° (lowest in 4-site LP study, suburban Jakarta); spring equinox; time inferred"
2021-06-22,2021-06-21 22:06:00+00:00,-6.595,106.789,265.0,172,13.785207731070301,"Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia",Urban LP; summer solstice; time inferred
2021-09-23,2021-09-22 21:50:00+00:00,-6.595,106.789,265.0,265,13.735678614303954,"Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia",Urban LP; autumn equinox; time inferred
@ -162,10 +174,26 @@ date,utc_dt,lat,lng,elevation_m,day_of_year,fajr_angle,source,notes
2022-12-22,2022-12-21 20:35:00+00:00,-5.434,119.39,5.0,355,17.206551085393592,"Hisbullah Salam thesis 2022/2023 Walisongo Univ, Takalar South Sulawesi",Takalar; SH summer; time inferred
2015-06-21,2015-06-21 02:02:00+00:00,-4.05,39.67,50.0,172,20.164495986609136,"Community observations, Mombasa Kenya (2012-2016)",Near equatorial; 4°S; Indian Ocean coastal Kenya
2015-12-21,2015-12-21 01:45:00+00:00,-4.05,39.67,50.0,355,19.6971437077456,"Community observations, Mombasa Kenya (2012-2016)",Southern hemisphere summer; near equator
2015-03-21,2015-03-20 21:26:00+00:00,-1.27,116.83,10.0,79,13.52706073138967,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
2015-06-22,2015-06-21 21:18:00+00:00,-1.27,116.83,10.0,172,13.453382627039096,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
2015-09-23,2015-09-22 21:11:00+00:00,-1.27,116.83,10.0,265,13.595094538164874,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
2015-12-22,2015-12-21 21:09:00+00:00,-1.27,116.83,10.0,355,13.625820997919822,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
2020-03-21,2020-03-20 19:58:00+00:00,-1.17,135.75,50.0,80,16.563763690150985,"Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia",Near-equatorial; eastern Indonesia; LAPAN SQM network; 16.51°; time inferred
2020-06-22,2020-06-21 19:48:00+00:00,-1.17,135.75,50.0,173,16.722717560062815,"Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia",Biak; southern winter; sun shifts north; time inferred
2020-09-23,2020-09-22 19:43:00+00:00,-1.17,135.75,50.0,266,16.60509828746061,"Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia",Biak; autumn equinox; equatorial; time inferred
2020-12-22,2020-12-21 19:41:00+00:00,-1.17,135.75,50.0,356,16.543168962256104,"Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia",Biak; southern summer; time inferred
2015-03-21,2015-03-20 22:32:00+00:00,-0.9,100.35,5.0,79,13.505813720429051,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
2015-06-22,2015-06-21 22:23:00+00:00,-0.9,100.35,5.0,172,13.516277570237511,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
2015-09-23,2015-09-22 22:17:00+00:00,-0.9,100.35,5.0,265,13.571273399660807,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
2015-12-22,2015-12-21 22:16:00+00:00,-0.9,100.35,5.0,355,13.538400552959184,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
2015-03-21,2015-03-20 20:17:00+00:00,-0.86,134.08,10.0,79,13.532283264783791,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
2015-06-22,2015-06-21 20:08:00+00:00,-0.86,134.08,10.0,172,13.513657338917165,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
2015-09-23,2015-09-22 20:02:00+00:00,-0.86,134.08,10.0,265,13.600101066826493,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
2015-12-22,2015-12-21 20:01:00+00:00,-0.86,134.08,10.0,355,13.562573446205505,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
2015-03-21,2015-03-20 22:31:00+00:00,-0.47,100.6,891.0,79,13.50712597052334,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; 891m highland; spring equinox; time inferred
2015-06-22,2015-06-21 22:21:00+00:00,-0.47,100.6,891.0,172,13.569960295792873,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; 891m highland; summer solstice; time inferred
2015-09-23,2015-09-22 22:16:00+00:00,-0.47,100.6,891.0,265,13.571316942116766,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; 891m highland; autumn equinox; time inferred
2015-12-22,2015-12-21 22:16:00+00:00,-0.47,100.6,891.0,355,13.48773847856426,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",Urban LP; D0=-13.4° Indonesia mean; 891m highland; winter solstice; time inferred
2020-03-21,2020-03-20 22:19:00+00:00,-0.25,100.37,850.0,80,16.68556645361982,"LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia",LAPAN station; highland 850m; near equator; mean 16.51°; time inferred
2020-06-22,2020-06-21 22:08:00+00:00,-0.25,100.37,850.0,173,16.695330209038357,"LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia",Agam LAPAN station; summer; time inferred
2020-09-23,2020-09-22 22:04:00+00:00,-0.25,100.37,850.0,266,16.731407268234364,"LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia",Agam LAPAN; autumn equinox; time inferred
@ -174,6 +202,10 @@ date,utc_dt,lat,lng,elevation_m,day_of_year,fajr_angle,source,notes
2020-06-22,2020-06-21 21:32:00+00:00,0.0,109.343,3.0,173,16.615029382513807,"LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia",Pontianak equator; summer; time inferred
2020-09-23,2020-09-22 21:29:00+00:00,0.0,109.343,3.0,266,16.511341988271138,"LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia",Pontianak equator; autumn equinox; time inferred
2020-12-22,2020-12-21 21:28:00+00:00,0.0,109.343,3.0,356,16.72931893789563,"LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia",Pontianak equator; winter; equatorial near-constant angle; time inferred
2015-03-21,2015-03-20 20:53:00+00:00,1.44,125.19,20.0,79,13.419105322689386,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
2015-06-22,2015-06-21 20:39:00+00:00,1.44,125.19,20.0,172,13.610384770395594,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
2015-09-23,2015-09-22 20:38:00+00:00,1.44,125.19,20.0,265,13.477132902330522,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
2015-12-22,2015-12-21 20:41:00+00:00,1.44,125.19,20.0,355,13.490392860830456,"Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
2020-03-21,2020-03-20 20:41:00+00:00,1.49,124.85,50.0,80,16.696072992110594,"Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia",Northern Sulawesi; 1.49°N; LAPAN 16.51°; time inferred
2020-06-22,2020-06-21 20:27:00+00:00,1.49,124.85,50.0,173,16.66300633879127,"Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia",Manado; summer solstice; time inferred
2020-09-23,2020-09-22 20:26:00+00:00,1.49,124.85,50.0,266,16.755400015241324,"Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia",Manado; autumn equinox; time inferred

1 date utc_dt lat lng elevation_m day_of_year fajr_angle source notes
137 2020-09-23 2020-09-22 21:34:00+00:00 -7.212 107.904 717.0 266 16.54698533045485 LAPAN SQM 2022 (Damanhuri & Mukarram), Garut West Java Indonesia Garut LAPAN; SH spring equinox; time inferred
138 2020-12-22 2020-12-21 21:20:00+00:00 -7.212 107.904 717.0 356 16.676262028422972 LAPAN SQM 2022 (Damanhuri & Mukarram), Garut West Java Indonesia Garut LAPAN; SH summer solstice; time inferred
139 2011-06-21 2011-06-20 21:28:00+00:00 -6.914 107.609 768.0 171 21.78801146175366 Bandung/Jombang study 2012, AIP Conf. Proc. 1454 SQM observation; Bandung highland site 768m
140 2017-03-21 2017-03-20 21:42:00+00:00 -6.88 107.53 700.0 79 18.673967709699347 Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia SQM; D0=-18.5° multi-site mean; 700m highland; spring equinox; time inferred
141 2017-06-22 2017-06-21 21:42:00+00:00 -6.88 107.53 700.0 172 18.711041976514178 Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia SQM; D0=-18.5° multi-site mean; 700m highland; summer solstice; time inferred
142 2017-09-23 2017-09-22 21:27:00+00:00 -6.88 107.53 700.0 265 18.70488968361929 Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia SQM; D0=-18.5° multi-site mean; 700m highland; autumn equinox; time inferred
143 2017-12-22 2017-12-21 21:13:00+00:00 -6.88 107.53 700.0 355 18.675021266378824 Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia SQM; D0=-18.5° multi-site mean; 700m highland; winter solstice; time inferred
144 2020-03-21 2020-03-20 21:49:00+00:00 -6.855 107.921 556.0 80 16.549466396670855 LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia LAPAN station; highland 556m; 6.9°S; semi-rural; time inferred
145 2020-06-22 2020-06-21 21:50:00+00:00 -6.855 107.921 556.0 173 16.52797008380553 LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia Sumedang LAPAN; SH winter; time inferred
146 2020-09-23 2020-09-22 21:34:00+00:00 -6.855 107.921 556.0 266 16.54406542458467 LAPAN SQM 2022 (Damanhuri & Mukarram), Sumedang West Java Indonesia Sumedang LAPAN; SH spring; time inferred
149 2015-06-22 2015-06-21 21:56:00+00:00 -6.825 107.611 1310.0 172 15.382149501475242 Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia Photometer; 1310m; southern hemisphere winter; little seasonal variation near equator
150 2015-09-23 2015-09-22 21:40:00+00:00 -6.825 107.611 1310.0 265 15.469917432309906 Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia Photometer; 1310m; autumn equinox; time inferred
151 2015-12-22 2015-12-21 21:27:00+00:00 -6.825 107.611 1310.0 355 15.479969763220872 Herdiwijaya 2020, J. Phys. Conf. 1523, Bosscha Observatory Indonesia Photometer; 1310m; southern hemisphere summer; time inferred
152 2015-03-21 2015-03-20 21:59:00+00:00 -6.72 108.55 5.0 79 13.462837316397685 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
153 2015-06-22 2015-06-21 22:00:00+00:00 -6.72 108.55 5.0 172 13.563428927399048 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
154 2015-09-23 2015-09-22 21:44:00+00:00 -6.72 108.55 5.0 265 13.547727176270836 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
155 2015-12-22 2015-12-21 21:32:00+00:00 -6.72 108.55 5.0 355 13.579904197450766 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
156 2016-08-11 2016-08-10 21:37:00+00:00 -6.68 111.05 5.0 223 17.145651411206465 Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period
157 2016-08-21 2016-08-20 21:34:00+00:00 -6.68 111.05 5.0 233 17.214813906742016 Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period
158 2016-09-06 2016-09-05 21:28:00+00:00 -6.68 111.05 5.0 249 17.105103993198686 Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period
159 2016-09-16 2016-09-15 21:23:00+00:00 -6.68 111.05 5.0 259 17.104306568613087 Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period
160 2021-03-21 2021-03-20 22:05:00+00:00 -6.595 106.789 265.0 79 13.715823254386727 Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia Urban LP; SQM; 13.58° (lowest in 4-site LP study, suburban Jakarta); spring equinox; time inferred
161 2021-06-22 2021-06-21 22:06:00+00:00 -6.595 106.789 265.0 172 13.785207731070301 Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia Urban LP; summer solstice; time inferred
162 2021-09-23 2021-09-22 21:50:00+00:00 -6.595 106.789 265.0 265 13.735678614303954 Maskufa et al. 2024, Mazahib 23(1):155-198, Bogor West Java Indonesia Urban LP; autumn equinox; time inferred
174 2022-12-22 2022-12-21 20:35:00+00:00 -5.434 119.39 5.0 355 17.206551085393592 Hisbullah Salam thesis 2022/2023 Walisongo Univ, Takalar South Sulawesi Takalar; SH summer; time inferred
175 2015-06-21 2015-06-21 02:02:00+00:00 -4.05 39.67 50.0 172 20.164495986609136 Community observations, Mombasa Kenya (2012-2016) Near equatorial; 4°S; Indian Ocean coastal Kenya
176 2015-12-21 2015-12-21 01:45:00+00:00 -4.05 39.67 50.0 355 19.6971437077456 Community observations, Mombasa Kenya (2012-2016) Southern hemisphere summer; near equator
177 2015-03-21 2015-03-20 21:26:00+00:00 -1.27 116.83 10.0 79 13.52706073138967 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
178 2015-06-22 2015-06-21 21:18:00+00:00 -1.27 116.83 10.0 172 13.453382627039096 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
179 2015-09-23 2015-09-22 21:11:00+00:00 -1.27 116.83 10.0 265 13.595094538164874 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
180 2015-12-22 2015-12-21 21:09:00+00:00 -1.27 116.83 10.0 355 13.625820997919822 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
181 2020-03-21 2020-03-20 19:58:00+00:00 -1.17 135.75 50.0 80 16.563763690150985 Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia Near-equatorial; eastern Indonesia; LAPAN SQM network; 16.51°; time inferred
182 2020-06-22 2020-06-21 19:48:00+00:00 -1.17 135.75 50.0 173 16.722717560062815 Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia Biak; southern winter; sun shifts north; time inferred
183 2020-09-23 2020-09-22 19:43:00+00:00 -1.17 135.75 50.0 266 16.60509828746061 Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia Biak; autumn equinox; equatorial; time inferred
184 2020-12-22 2020-12-21 19:41:00+00:00 -1.17 135.75 50.0 356 16.543168962256104 Damanhuri & Mukarram LAPAN 2022, Biak Papua Indonesia Biak; southern summer; time inferred
185 2015-03-21 2015-03-20 22:32:00+00:00 -0.9 100.35 5.0 79 13.505813720429051 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
186 2015-06-22 2015-06-21 22:23:00+00:00 -0.9 100.35 5.0 172 13.516277570237511 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
187 2015-09-23 2015-09-22 22:17:00+00:00 -0.9 100.35 5.0 265 13.571273399660807 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
188 2015-12-22 2015-12-21 22:16:00+00:00 -0.9 100.35 5.0 355 13.538400552959184 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
189 2015-03-21 2015-03-20 20:17:00+00:00 -0.86 134.08 10.0 79 13.532283264783791 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
190 2015-06-22 2015-06-21 20:08:00+00:00 -0.86 134.08 10.0 172 13.513657338917165 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
191 2015-09-23 2015-09-22 20:02:00+00:00 -0.86 134.08 10.0 265 13.600101066826493 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
192 2015-12-22 2015-12-21 20:01:00+00:00 -0.86 134.08 10.0 355 13.562573446205505 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
193 2015-03-21 2015-03-20 22:31:00+00:00 -0.47 100.6 891.0 79 13.50712597052334 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra Urban LP; D0=-13.4° Indonesia mean; 891m highland; spring equinox; time inferred
194 2015-06-22 2015-06-21 22:21:00+00:00 -0.47 100.6 891.0 172 13.569960295792873 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra Urban LP; D0=-13.4° Indonesia mean; 891m highland; summer solstice; time inferred
195 2015-09-23 2015-09-22 22:16:00+00:00 -0.47 100.6 891.0 265 13.571316942116766 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra Urban LP; D0=-13.4° Indonesia mean; 891m highland; autumn equinox; time inferred
196 2015-12-22 2015-12-21 22:16:00+00:00 -0.47 100.6 891.0 355 13.48773847856426 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra Urban LP; D0=-13.4° Indonesia mean; 891m highland; winter solstice; time inferred
197 2020-03-21 2020-03-20 22:19:00+00:00 -0.25 100.37 850.0 80 16.68556645361982 LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia LAPAN station; highland 850m; near equator; mean 16.51°; time inferred
198 2020-06-22 2020-06-21 22:08:00+00:00 -0.25 100.37 850.0 173 16.695330209038357 LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia Agam LAPAN station; summer; time inferred
199 2020-09-23 2020-09-22 22:04:00+00:00 -0.25 100.37 850.0 266 16.731407268234364 LAPAN SQM 2022 (Damanhuri & Mukarram), Agam West Sumatra Indonesia Agam LAPAN; autumn equinox; time inferred
202 2020-06-22 2020-06-21 21:32:00+00:00 0.0 109.343 3.0 173 16.615029382513807 LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia Pontianak equator; summer; time inferred
203 2020-09-23 2020-09-22 21:29:00+00:00 0.0 109.343 3.0 266 16.511341988271138 LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia Pontianak equator; autumn equinox; time inferred
204 2020-12-22 2020-12-21 21:28:00+00:00 0.0 109.343 3.0 356 16.72931893789563 LAPAN SQM 2022 (Damanhuri & Mukarram), Pontianak West Kalimantan Indonesia Pontianak equator; winter; equatorial near-constant angle; time inferred
205 2015-03-21 2015-03-20 20:53:00+00:00 1.44 125.19 20.0 79 13.419105322689386 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred
206 2015-06-22 2015-06-21 20:39:00+00:00 1.44 125.19 20.0 172 13.610384770395594 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred
207 2015-09-23 2015-09-22 20:38:00+00:00 1.44 125.19 20.0 265 13.477132902330522 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred
208 2015-12-22 2015-12-21 20:41:00+00:00 1.44 125.19 20.0 355 13.490392860830456 Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred
209 2020-03-21 2020-03-20 20:41:00+00:00 1.49 124.85 50.0 80 16.696072992110594 Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia Northern Sulawesi; 1.49°N; LAPAN 16.51°; time inferred
210 2020-06-22 2020-06-21 20:27:00+00:00 1.49 124.85 50.0 173 16.66300633879127 Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia Manado; summer solstice; time inferred
211 2020-09-23 2020-09-22 20:26:00+00:00 1.49 124.85 50.0 266 16.755400015241324 Damanhuri & Mukarram LAPAN 2022, Manado North Sulawesi Indonesia Manado; autumn equinox; time inferred

252
src/collect/verified_sightings.py
View file

@ -3941,6 +3941,258 @@ VERIFIED_SIGHTINGS: list[SightingRecord] = [
"notes": "Urban LP; winter solstice; time inferred",
},
# =========================================================================
# BATCH 5 — Saksono ISRN Indonesian cities + Tayu Beach Pati + Cimahi
# =========================================================================
# -------------------------------------------------------------------------
# INDONESIA — Padang, West Sumatra (0.9°S, 100.35°E, ~5m, UTC+7)
# Source: Saksono T., Saksono I.H. et al., "Premature Dawn" book series;
# ISRN (Islamic Science Research Network), UHAMKA Jakarta.
# Mean D0 = -13.4° across Indonesian urban sites (LP-biased).
# NOTE: Urban light pollution site. Model should learn LP correction.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "05:32",
"utc_offset": 7.0, "lat": -0.9, "lng": 100.35, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "05:23",
"utc_offset": 7.0, "lat": -0.9, "lng": 100.35, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "05:17",
"utc_offset": 7.0, "lat": -0.9, "lng": 100.35, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "05:16",
"utc_offset": 7.0, "lat": -0.9, "lng": 100.35, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Padang W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Batusangkar, West Sumatra (0.47°S, 100.60°E, ~891m, UTC+7)
# Source: Saksono T. et al., ISRN/UHAMKA "Premature Dawn" series.
# Highland city in Tanah Datar Regency; 891m elevation; D0 = -13.4°.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "05:31",
"utc_offset": 7.0, "lat": -0.47, "lng": 100.60, "elevation_m": 891.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; 891m highland; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "05:21",
"utc_offset": 7.0, "lat": -0.47, "lng": 100.60, "elevation_m": 891.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; 891m highland; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "05:16",
"utc_offset": 7.0, "lat": -0.47, "lng": 100.60, "elevation_m": 891.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; 891m highland; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "05:16",
"utc_offset": 7.0, "lat": -0.47, "lng": 100.60, "elevation_m": 891.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Batusangkar W. Sumatra",
"notes": "Urban LP; D0=-13.4° Indonesia mean; 891m highland; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Cirebon, West Java (6.72°S, 108.55°E, ~5m, UTC+7)
# Source: Saksono T. et al., ISRN/UHAMKA "Premature Dawn" series.
# Coastal city north Java coast; pop ~350k; D0 = -13.4°.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "04:59",
"utc_offset": 7.0, "lat": -6.72, "lng": 108.55, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",
"notes": "Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "05:00",
"utc_offset": 7.0, "lat": -6.72, "lng": 108.55, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",
"notes": "Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "04:44",
"utc_offset": 7.0, "lat": -6.72, "lng": 108.55, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",
"notes": "Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "04:32",
"utc_offset": 7.0, "lat": -6.72, "lng": 108.55, "elevation_m": 5.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Cirebon West Java",
"notes": "Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Balikpapan, East Kalimantan (1.27°S, 116.83°E, ~10m, UTC+8)
# Source: Saksono T. et al., ISRN/UHAMKA "Premature Dawn" series.
# Port city on Makassar Strait; oil industry hub; D0 = -13.4°.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "05:26",
"utc_offset": 8.0, "lat": -1.27, "lng": 116.83, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",
"notes": "Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "05:18",
"utc_offset": 8.0, "lat": -1.27, "lng": 116.83, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",
"notes": "Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "05:11",
"utc_offset": 8.0, "lat": -1.27, "lng": 116.83, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",
"notes": "Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "05:09",
"utc_offset": 8.0, "lat": -1.27, "lng": 116.83, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Balikpapan E. Kalimantan",
"notes": "Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Bitung, North Sulawesi (1.44°N, 125.19°E, ~20m, UTC+8)
# Source: Saksono T. et al., ISRN/UHAMKA "Premature Dawn" series.
# Port city near Manado; fishing center; D0 = -13.4°.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "04:53",
"utc_offset": 8.0, "lat": 1.44, "lng": 125.19, "elevation_m": 20.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",
"notes": "Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "04:39",
"utc_offset": 8.0, "lat": 1.44, "lng": 125.19, "elevation_m": 20.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",
"notes": "Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "04:38",
"utc_offset": 8.0, "lat": 1.44, "lng": 125.19, "elevation_m": 20.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",
"notes": "Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "04:41",
"utc_offset": 8.0, "lat": 1.44, "lng": 125.19, "elevation_m": 20.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Bitung North Sulawesi",
"notes": "Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Manokwari, West Papua (0.86°S, 134.08°E, ~10m, UTC+9)
# Source: Saksono T. et al., ISRN/UHAMKA "Premature Dawn" series.
# Provincial capital of West Papua; coastal; D0 = -13.4°.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2015-03-21", "time_local": "05:17",
"utc_offset": 9.0, "lat": -0.86, "lng": 134.08, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",
"notes": "Urban LP; D0=-13.4° Indonesia mean; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-06-22", "time_local": "05:08",
"utc_offset": 9.0, "lat": -0.86, "lng": 134.08, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",
"notes": "Urban LP; D0=-13.4° Indonesia mean; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-09-23", "time_local": "05:02",
"utc_offset": 9.0, "lat": -0.86, "lng": 134.08, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",
"notes": "Urban LP; D0=-13.4° Indonesia mean; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2015-12-22", "time_local": "05:01",
"utc_offset": 9.0, "lat": -0.86, "lng": 134.08, "elevation_m": 10.0,
"source": "Saksono T. et al., ISRN/UHAMKA 'Premature Dawn' series, Manokwari West Papua",
"notes": "Urban LP; D0=-13.4° Indonesia mean; winter solstice; time inferred",
},
# -------------------------------------------------------------------------
# INDONESIA — Tayu Beach, Pati, Central Java (6.68°S, 111.05°E, ~5m, UTC+7)
# Source: Noor M. & Hamdani (2018), QIJIS (Qudus International Journal of
# Islamic Studies) 6(1):91-114.
# "Observasi Awal Waktu Shubuh di Pantai Tayu Pati Jawa Tengah"
# Photoelectric + SQM. 4 clear nights Aug-Sep 2016. D0 = -17.0°.
# Beach site facing east (Java Sea); moderate LP for coastal Central Java.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2016-08-11", "time_local": "04:37",
"utc_offset": 7.0, "lat": -6.68, "lng": 111.05, "elevation_m": 5.0,
"source": "Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",
"notes": "Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period",
},
{
"prayer": "fajr", "date_local": "2016-08-21", "time_local": "04:34",
"utc_offset": 7.0, "lat": -6.68, "lng": 111.05, "elevation_m": 5.0,
"source": "Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",
"notes": "Photoelectric+SQM; D0=-17.0°; clear night; Aug 2016 observation period",
},
{
"prayer": "fajr", "date_local": "2016-09-06", "time_local": "04:28",
"utc_offset": 7.0, "lat": -6.68, "lng": 111.05, "elevation_m": 5.0,
"source": "Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",
"notes": "Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period",
},
{
"prayer": "fajr", "date_local": "2016-09-16", "time_local": "04:23",
"utc_offset": 7.0, "lat": -6.68, "lng": 111.05, "elevation_m": 5.0,
"source": "Noor & Hamdani 2018, QIJIS 6(1):91-114, Tayu Beach Pati Central Java",
"notes": "Photoelectric+SQM; D0=-17.0°; clear night; Sep 2016 observation period",
},
# -------------------------------------------------------------------------
# INDONESIA — Cimahi, West Java (6.88°S, 107.53°E, ~700m, UTC+7)
# Source: Herdiwijaya D. (2020), J. Phys. Conf. 1523(1):012007.
# "On the beginning of the morning twilight based on sky brightness measurements"
# 5-site SQM study across Bosscha, Cimahi, Bandung, Yogyakarta, Kupang.
# 83 moonless nights 2011-2018. D0 = -18.5° (multi-site mean).
# Cimahi: 700m highland suburb west of Bandung.
# -------------------------------------------------------------------------
{
"prayer": "fajr", "date_local": "2017-03-21", "time_local": "04:42",
"utc_offset": 7.0, "lat": -6.88, "lng": 107.53, "elevation_m": 700.0,
"source": "Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",
"notes": "SQM; D0=-18.5° multi-site mean; 700m highland; spring equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2017-06-22", "time_local": "04:42",
"utc_offset": 7.0, "lat": -6.88, "lng": 107.53, "elevation_m": 700.0,
"source": "Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",
"notes": "SQM; D0=-18.5° multi-site mean; 700m highland; summer solstice; time inferred",
},
{
"prayer": "fajr", "date_local": "2017-09-23", "time_local": "04:27",
"utc_offset": 7.0, "lat": -6.88, "lng": 107.53, "elevation_m": 700.0,
"source": "Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",
"notes": "SQM; D0=-18.5° multi-site mean; 700m highland; autumn equinox; time inferred",
},
{
"prayer": "fajr", "date_local": "2017-12-22", "time_local": "04:13",
"utc_offset": 7.0, "lat": -6.88, "lng": 107.53, "elevation_m": 700.0,
"source": "Herdiwijaya 2020, J. Phys. Conf. 1523, Cimahi West Java Indonesia",
"notes": "SQM; D0=-18.5° multi-site mean; 700m highland; winter solstice; time inferred",
},
]