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828 B
pray-calc / getMscFajr
Function: getMscFajr()
getMscFajr(
date,latitude):number
Defined in: getMSC.ts:103
Compute Fajr offset in minutes before sunrise using the MCW algorithm.
Returns minutes before sunrise. At latitudes above 55°, the 1/7-night approximation is recommended (handled at the calling site).
Parameters
date
Date
Observer's local date
latitude
number
Observer latitude in decimal degrees
Returns
number
Minutes before sunrise for Fajr (Subh Sadiq)
Example
const offset = getMscFajr(new Date('2024-06-21'), 40.7128);
// offset ≈ 93 (minutes before sunrise for New York in summer)