Calculation Methods

From Pray Times

There are different conventions for calculating prayer times. The following table lists several well-known conventions currently in use in various regions:

Method	Abbreviation	Region Used
Muslim World League	MWL	Europe, Far East, parts of US
Islamic Society of North America	ISNA	North America (US and Canada)
Egyptian General Authority of Survey	Egypt	Africa, Syria, Lebanon, Malaysia
Umm al-Qura University, Makkah	Makkah	Arabian Peninsula
University of Islamic Sciences, Karachi	Karachi	Pakistan, Afganistan, Bangladesh, India
Institute of Geophysics, University of Tehran	Tehran	Iran, Some Shia communities
Shia Ithna Ashari (Ja`fari)	Jafari	Parts of US and Middle East

Method	Fajr Angle	Isha Angle	Maghrib Angle	Midnight
MWL	18	17	-	mid Sunset to Sunrise
ISNA	15	15	-	mid Sunset to Sunrise
Egypt	19.5	17.5	-	mid Sunset to Sunrise
Makkah	18.5	90 min after Maghrib 120 min during Ramadan	-	mid Sunset to Sunrise
Karachi	18	18	-	mid Sunset to Sunrise
Tehran	17.7	-	4.5	mid Sunset to Fajr
Jafari	16	-	4	mid Sunset to Fajr

Note: Fajr angle was 19 degrees in Umm al-Qura convention before 1430 Hijri.