pray-calc-ml/data/raw/raw_sightings/khalifa_2018_saudi_desert.csv
Aric Camarata c1eeef53c4 Expand dataset to 5,871 Fajr / 46 Isha across 114 locations
Major additions:
- Extract all 1,621 Basthoni 2022 SQM records (46 Indonesian sites,
  Lampiran 2-5) via precomputed_angles.py
- Add 9 new raw sighting CSVs: Abdel-Hadi Malaysia, BRIN multistation,
  Kassim Bahali (2017+2019), Khalifa Saudi, Moonsighting.com,
  Shaukat 2015 Blackburn UK, Walisongo Sulawesi
- Curate aggregate D0 database (115 entries) in research/

Pipeline improvements:
- Open-Topo-Data SRTM30m primary elevation API with fallback
- APPROVED_RAW_CSVS allowlist prevents circular data ingestion
- Pre-computed angle merge path (bypasses back-calculation for SQM data)
- BAD_NOTE_MARKERS quality filter for excluded sources

Collection tools:
- BRIN multistation SQM processors
- PDF/HTML table extractor for academic papers
- Source tracking database (collection_manifest.json)

Documentation:
- Rewrite .wiki/Data.md and .wiki/Research.md from scratch
- Expand Data-Sources.md with full Basthoni Lampiran breakdown
- Add 14 researcher outreach drafts
- Update .gitignore to exclude bulk/experimental files
2026-02-28 10:51:01 -05:00

2.8 KiB

1prayerdate_localtime_localutc_offsetlatlngelevation_msourcenotes
2fajr2016-05-2804:233.025.483339.3667752Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; ~80km Hail-Medina desert route, deep desert; Do=14.60; back-calc=14.600
3fajr2016-05-2904:213.025.483339.3667752Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; ~80km Hail-Medina desert route, deep desert; Do=14.91; back-calc=14.910
4fajr2016-05-3004:213.025.7539.3791Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Hail-Medina desert route, deep desert; Do=14.74; back-calc=14.740
5fajr2016-06-0404:153.025.516741.01092Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Near Hail desert site, 1092m, deep desert; Do=14.46; back-calc=14.460
6fajr2016-12-1205:303.019.5543.63331110Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Asir region, 1110m, deep desert; Do=13.97; back-calc=13.970
7fajr2016-12-1305:303.019.666743.51671049Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Asir region, 1049m, deep desert; Do=14.23; back-calc=14.230
8fajr2016-12-1905:543.024.283339.6667770Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Medina region, 770m, deep desert; Do=14.62; back-calc=14.620
9fajr2016-12-2005:563.024.283339.6667770Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Medina region, 770m, deep desert; Do=14.30; back-calc=14.300
10fajr2016-12-2105:563.024.316739.65731Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Medina region, 731m, deep desert; Do=14.44; back-calc=14.440
11fajr2017-01-0705:593.024.316739.65731Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Medina region, 731m, deep desert; Do=14.95; back-calc=14.950
12fajr2017-01-0806:003.024.316739.65731Khalifa et al. 2018, NRIAG J Astronomy Geophysics doi:10.1016/j.nrjag.2018.01.001, Table 3, Saudi Arabia deep desertSaudi Arabia deep desert; Medina region, 731m, deep desert; Do=14.99; back-calc=14.990