ISNA North America method

Prayer time calculator

Daily adhan times are sourced with the 15-degree North America method, then end times are calculated with Quran and Sunnah prayer-window rules.

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Sources

Calculation and end-time basis

AlAdhan API methods: method 2, ISNA, Fajr 15 and Isha 15. Quran 17:78, the broad prayer-time command. Sahih Muslim 612a, prayer windows including Isha until half the night.