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Calculation Methods

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(New page: There are different conventions for calculating prayer times. The following table lists several well-known conventions currently in use in various regions: {| class="wikitable" style="mar...)
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There are different conventions for calculating prayer times. The following table lists several well-known conventions currently in use in various regions:
There are different conventions for calculating prayer times. The following table lists several well-known conventions currently in use in various regions:
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{| class="wikitable" style="margin: 1em 2.25em 0;"
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{| class="wikitable" style="margin: 1em 0.5em 0.5em;"
!Method
!Method
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!Abbreviation
+
!Abbr.
!Region Used
!Region Used
|-
|-
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| Umm al-Qura University, Makkah || Makkah || Arabian Peninsula
| Umm al-Qura University, Makkah || Makkah || Arabian Peninsula
|-
|-
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| University of Islamic Sciences, Karachi || Karachi || Pakistan, Afganistan, Bangladesh, India
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| University of Islamic Sciences, Karachi || Karachi   || Pakistan, Afganistan, Bangladesh, India
|-
|-
| Institute of Geophysics, University of Tehran || Tehran || Iran, Some Shia communities
| Institute of Geophysics, University of Tehran || Tehran || Iran, Some Shia communities
|-
|-
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| Shia Ithna Ashari (Ja`fari) || Jafari || Parts of US and Middle East
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| Shia Ithna Ashari, Leva Research Institute, Qum   || Jafari || Some Shia communities worldwide
|}
|}
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=== Calculating Parameters ===
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{| class="wikitable" style="margin: 1em 2.25em 0;"
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The table below shows the default calculating parameters for each calculation method:
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{| class="wikitable" style="margin: 1em 0.5em 0.5em;"
!Method  
!Method  
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!Fajr Angle
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!Fajr Angle
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!Isha Angle
+
!Isha  
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!Maghrib Angle
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!Maghrib  
!Midnight
!Midnight
|-
|-
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| MWL || 18 || 17 || - || mid Sunset to Sunrise
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| MWL || 18° || 17° || = Senset || mid Sunset to Sunrise
|-
|-
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| ISNA || 15 || 15 || - || mid Sunset to Sunrise
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| ISNA || 15° || 15° || = Senset || mid Sunset to Sunrise
|-
|-
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| Egypt || 19.5 || 17.5 || - || mid Sunset to Sunrise
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| Egypt || 19.5° || 17.5° || = Senset || mid Sunset to Sunrise
|-
|-
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| Makkah || 18.5 || 90 min after Maghrib<br>120 min during Ramadan || - || mid Sunset to Sunrise
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| Makkah || 18.5&deg; || 90 min after Maghrib<br>120 min during Ramadan || = Senset || mid Sunset to Sunrise
|-
|-
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| Karachi || 18 || 18 || - || mid Sunset to Sunrise
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| Karachi || 18&deg; || 18&deg; || = Senset || mid Sunset to Sunrise
|-
|-
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| Tehran || 17.7 || - || 4.5 || mid Sunset to Fajr
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| Tehran || 17.7&deg; || 14&deg; || 4.5&deg; || mid Sunset to Fajr
|-
|-
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| Jafari || 16 || - || 4 || mid Sunset to Fajr
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| Jafari || 16&deg; || 14&deg; || 4&deg; || mid Sunset to Fajr
|}
|}
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<blockquote>
<blockquote>
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'''Note''': Fajr angle was 19 degrees in Umm al-Qura convention before 1430 Hijri.
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'''Notes''':  
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*Fajr angle was 19 degrees in Umm al-Qura method before Muharram 1430 Hijri (December 2008).
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*Isha angle is not explicitly specified in Tehran method.
</blockquote>
</blockquote>

Latest revision as of 04:28, 29 October 2010

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

Method Abbr. 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, Leva Research Institute, Qum   Jafari Some Shia communities worldwide

Calculating Parameters

The table below shows the default calculating parameters for each calculation method:

Method   Fajr Angle Isha Maghrib Midnight
MWL 18° 17° = Senset mid Sunset to Sunrise
ISNA 15° 15° = Senset mid Sunset to Sunrise
Egypt 19.5° 17.5° = Senset mid Sunset to Sunrise
Makkah 18.5° 90 min after Maghrib
120 min during Ramadan 		= Senset mid Sunset to Sunrise
Karachi 18° 18° = Senset mid Sunset to Sunrise
Tehran 17.7° 14° 4.5° mid Sunset to Fajr
Jafari 16° 14° 4° mid Sunset to Fajr
Notes:
  • Fajr angle was 19 degrees in Umm al-Qura method before Muharram 1430 Hijri (December 2008).
  • Isha angle is not explicitly specified in Tehran method.
Retrieved from "http://praytimes.org/wiki/Calculation_Methods"
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