How Islamic Prayer Times are Determined (Astronomical Guide)
The five obligatory daily prayers (Salah) in Islam follow precise astronomical positions of the sun relative to the local horizon, ensuring that believers establish regular communion with their Creator across the day and night. Below is the authentic Fiqh definition for each prayer time:
- Fajr (True Dawn): Begins at the first appearance of the horizontal white light across the eastern horizon (Fajr as-Sadiq) and ends immediately prior to the sun's upper edge rising above the horizon (Sunrise). This also marks the start of the daily Ramadan fast (Sehar / Suhoor deadline).
- Dhuhr (Midday): Begins immediately when the sun passes its highest zenith in the sky (Zawal) and starts declining towards the west.
- Asr (Late Afternoon): In the standard (Shafi'i, Maliki, Hanbali) juristic school, Asr begins when the length of an object’s shadow equals its true height plus its midday shadow. In the Hanafi school, it begins when the shadow becomes twice the object's height.
- Maghrib (Sunset & Iftar): Begins the exact moment the sun disc sets completely below the western horizon. This marks the moment Muslims break their fast (Iftar) and offer Maghrib prayer.
- Isha (Nightfall): Begins when the twilight afterglow (Shafaq) has completely vanished from the sky, leaving full darkness.
Understanding the 5 Major Calculation Methods
Because twilight angles vary slightly across global latitudes, Islamic astronomical organizations establish standardized sun depression angles to calculate accurate prayer and fasting times:
| Organization / Method | Region Used | Fajr / Isha Angles |
|---|---|---|
| Muslim World League (MWL) | Europe, Far East, parts of America | Fajr: 18°, Isha: 17° |
| Islamic Society of North America (ISNA) | United States, Canada | Fajr: 15°, Isha: 15° |
| Umm Al-Qura University, Makkah | Saudi Arabia, Arabian Gulf | Fajr: 18.5°, Isha: 90 min after Maghrib |
| Egyptian General Authority of Survey | Egypt, Africa, Middle East | Fajr: 19.5°, Isha: 17.5° |
| Univ. of Islamic Sciences, Karachi | Pakistan, India, Bangladesh, Afghanistan | Fajr: 18°, Isha: 18° |
Frequently Asked Questions (FAQ)
1. How accurate is the Auto GPS location feature?
The Auto GPS button uses your device’s native satellite/Wi-Fi positioning to detect your exact latitude and longitude down to a few meters, providing the most accurate localized prayer times possible.
2. Why is there a difference between Shafi'i and Hanafi Asr times?
The Hanafi school calculates Asr when the shadow of an object reaches twice its length (Mithlayn), resulting in an Asr time that begins approximately 45 to 60 minutes later than the Standard Shafi'i/Maliki/Hanbali method (which calculates Asr at single shadow length).
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