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959 B
959 B
pray-calc / getMscIsha
Function: getMscIsha()
getMscIsha(
date,latitude,shafaq?):number
Defined in: getMSC.ts:133
Compute Isha offset in minutes after sunset using the MCW algorithm.
Three Shafaq modes:
- 'general': blend that reduces hardship at high latitudes (default)
- 'ahmer': based on disappearance of redness (shafaq ahmer)
- 'abyad': based on disappearance of whiteness (shafaq abyad), later
Parameters
date
Date
Observer's local date
latitude
number
Observer latitude in decimal degrees
shafaq?
ShafaqMode = 'general'
Twilight type: 'general' | 'ahmer' | 'abyad'
Returns
number
Minutes after sunset for Isha
Example
const offset = getMscIsha(new Date('2024-06-21'), 40.7128, 'general');
// offset ≈ 84