Calculation Settings

Understanding prayer time calculations

This page explains how Pray.Zone builds prayer times from calculation methods, twilight angles, the Asr juristic setting, and high-latitude adjustments.

Calculation Methods
Calculation Methods 26

Official presets with their own angles and adjustment rules.

Asr Madhab 2

Standard and Hanafi affect only the Asr prayer time.

High Latitude Rule 3

Used where twilight can be too long or disappear seasonally.

Overview

Prayer times begin with your location, date, and time zone. After that, the selected calculation preset decides the twilight angles for Fajr and Isha, the juristic rule for Asr, and the fallback logic used in very high latitudes.

Most users should keep the official method used in their country or city. The custom settings are there for people who want to match a local mosque, council, or school of thought more precisely.

Fajr Angle The Fajr angle is the solar depression used to estimate true dawn. A larger angle usually makes Fajr earlier because it assumes dawn begins while the sun is farther below the horizon.
Asr Madhab The Asr juristic setting changes only the Asr prayer. The standard option follows the Shafi'i, Maliki, and Hanbali opinion, while Hanafi uses a later shadow ratio and therefore produces a later Asr time.
High Latitude Rule In places where twilight remains for a very long time, or does not fully disappear in some seasons, standard angle-based calculations can become unreliable. High-latitude rules provide a fallback so Fajr and Isha remain usable.

Calculation Methods

Each method preset bundles together a known convention for Fajr, Isha, and sometimes special regional adjustments. Choosing a method in the settings drawer automatically fills the related angles, Asr madhab, and high-latitude rule.

These notes show the usual use of each method and, when relevant, the default preset Pray.Zone applies.
MuslimWorldLeague

Muslim World League

Muslim World League recommended method – 18° for both Fajr and Isha.

Fajr Angle 18°
Isha Angle 17°
Asr Madhab Shafi
Where it is used

The broad fallback on Pray.Zone for much of Europe and countries without a dedicated local preset.

Egyptian

Egyptian General Authority of Survey

Official Egyptian method – Fajr ≈19.5°, Isha ≈17.5°.

Fajr Angle 19.5°
Isha Angle 17.5°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Egypt and a large part of Africa and the Arab world.

Karachi

University of Islamic Sciences, Karachi

University of Islamic Sciences Karachi – 18° for Fajr and Isha.

Fajr Angle 18°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Pakistan, Afghanistan, Bangladesh, and parts of India.

Makkah

Makkah

Fajr Angle 18.5°
Isha Angle
Asr Madhab Shafi
Where it is used

Used by local communities depending on country, mosque, or school preference.

Makkah

Makkah

Fajr Angle 18.5°
Isha Angle
Asr Madhab Shafi
Where it is used

Used by local communities depending on country, mosque, or school preference.

Dubai

Dubai

Dubai Islamic Affairs method – angles around 18.5°.

Fajr Angle 18.2°
Isha Angle 18.2°
Asr Madhab Shafi
Where it is used

Used in the United Arab Emirates, especially Dubai-based schedules.

MoonSightingCommittee

Moon Sighting Committee

Global Moon Sighting Committee – primarily based on actual visual moon sighting.

Fajr Angle 18°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Used by some North American communities that follow moon-sighting committee schedules.

NorthAmerica

Islamic Society of North America

Islamic Society of North America (ISNA) method – 15° for Fajr and Isha.

Fajr Angle 15°
Isha Angle 15°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for the United States and Canada.

NorthAmerica

Islamic Society of North America

Islamic Society of North America (ISNA) method – 15° for Fajr and Isha.

Fajr Angle 15°
Isha Angle 15°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for the United States and Canada.

Kuwait

Kuwait

Official Kuwait method – moderate angles per official calendar.

Fajr Angle 18°
Isha Angle 17.5°
Asr Madhab Shafi
Where it is used

Used in Kuwait and by communities that follow Gulf-style timetables.

Qatar

Qatar

Official Qatar method – based on official calendar and local angles.

Fajr Angle 18°
Isha Angle
Asr Madhab Shafi
Where it is used

Used in Qatar and by some nearby Gulf communities.

Singapore

Majlis Ugama Islam Singapura

MUIS Singapore method – 20° for Fajr and Isha.

Fajr Angle 20°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Singapore.

Uoif

Union des Organisations Islamiques de France

UOIF France method – 12° for Fajr and Isha.

Fajr Angle 12°
Isha Angle 12°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for France and commonly used by French mosque timetables.

Jakim

Department of Islamic Advancement, Malaysia (JAKIM)

JAKIM (Malaysia) method – 20° for Fajr and Isha.

Fajr Angle 20°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Malaysia and often used in Malaysia and Brunei.

IthnaAshari

Ithna Ashari

Twelver Shia method – Fajr 16°, Isha 14°.

Fajr Angle 16°
Isha Angle 14°
Asr Madhab Shafi
Where it is used

Mainly used by Jafari / Twelver Shia communities.

IthnaAshari

Ithna Ashari

Twelver Shia method – Fajr 16°, Isha 14°.

Fajr Angle 16°
Isha Angle 14°
Asr Madhab Shafi
Where it is used

Mainly used by Jafari / Twelver Shia communities.

Tehran

Institute of Geophysics, University of Tehran

Institute of Geophysics, University of Tehran – Fajr 17.7°, Isha 14°.

Fajr Angle 17.7°
Isha Angle 14°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Iran and also used by some Shia communities.

Turkey

Turkey

Turkish Diyanet (Religious Affairs) method – approximately 12° angles.

Fajr Angle 18°
Isha Angle 17°
Asr Madhab Shafi
Where it is used

Default on Pray.Zone for Turkey and based on Diyanet-style schedules.

Morocco

Morocco

Official Moroccan method – Fajr 19°, Isha 18°.

Fajr Angle 19°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Used in Morocco and Moroccan official timetables.

Indonesia

Indonesia

Indonesian Ministry of Religious Affairs – based on moon sighting and local calculations.

Fajr Angle 20°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Used in Indonesia by some local calendars and mosque timetables.

Algerian

Algerian

Official Algerian method – uses moderate angles according to the local calendar.

Fajr Angle 18°
Isha Angle 17°
Asr Madhab Shafi
Where it is used

Commonly associated with Algeria and Algerian timetables.

SihatKemenag

Sihat Kemenag

Preset based on Indonesian Ministry of Religious Affairs standards for local prayer applications.

Fajr Angle 20°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Used in some Indonesian apps and Kemenag-aligned local setups.

Russia

Russia

Local method used in Russia, with practical angles and adjustments for northern regions.

Fajr Angle 16°
Isha Angle 15°
Asr Madhab Shafi
Where it is used

Used in parts of Russia and nearby Muslim communities with local northern-latitude practices.

Tunisian

Tunisian

Official Tunisian method using locally adopted angles from national timetables.

Fajr Angle 18°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Used in Tunisia and Tunisian official schedules.

LondonCentralMosque

London Central Mosque

London/UK preset using 17.5° Fajr and 15° Isha with angle-based high-latitude handling.

Fajr Angle 18°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Community-specific option used by some London and UK mosque timetables.

LondonCentralMosque

London Central Mosque

London/UK preset using 17.5° Fajr and 15° Isha with angle-based high-latitude handling.

Fajr Angle 18°
Isha Angle 18°
Asr Madhab Shafi
Where it is used

Community-specific option used by some London and UK mosque timetables.

Fajr Angle (°)

The Fajr angle is the solar depression used to estimate true dawn. A larger angle usually makes Fajr earlier because it assumes dawn begins while the sun is farther below the horizon.

Isha Angle (°)

The Isha angle is the solar depression used for the night prayer. A larger angle usually makes Isha later because the model waits for deeper twilight before considering nightfall complete.

Asr Madhab

The Asr juristic setting changes only the Asr prayer. The standard option follows the Shafi'i, Maliki, and Hanbali opinion, while Hanafi uses a later shadow ratio and therefore produces a later Asr time.

Standard (Shafi'i / Maliki / Hanbali)

earlier Asr based on the standard shadow length rule.

Hanafi

later Asr based on the Hanafi shadow length rule.

High Latitude Rule

In places where twilight remains for a very long time, or does not fully disappear in some seasons, standard angle-based calculations can become unreliable. High-latitude rules provide a fallback so Fajr and Isha remain usable.

Middle of the Night

Splits the night in half and uses the midpoint as a practical limit.

One-Seventh of the Night

Uses one-seventh of the night as the adjustment window for dawn and nightfall.

Angle-Based / 1/60th of night

Keeps the twilight-angle idea but scales it to a fraction of the night.

Custom settings

When you change the angles, Asr madhab, or high-latitude rule manually, the site can treat your setup as a custom configuration. That is useful when you want to follow a local mosque timetable rather than a national default preset.

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