Understanding Prayer Time Calculation Methods
Prayer times in Islam are determined based on the position of the sun in the sky. While this principle is universal, the exact interpretation of when these times begin and end varies across different regions and schools of thought. This is why our Prayer Times App offers 14 different calculation methods to ensure accuracy according to your preferred authority.
Why Different Methods Exist
Different calculation methods exist due to varying interpretations of twilight angle (for Fajr and Isha), regional traditions, and astronomical considerations specific to different geographical locations.
Popular Calculation Methods Explained
1. Muslim World League
A widely used method around the world:
- Fajr angle: 18°
- Isha angle: 17°
- Suitable for: Many European and North American regions
2. Islamic Society of North America (ISNA)
Common in North America:
- Fajr angle: 15°
- Isha angle: 15°
- Suitable for: USA and Canada
3. Egyptian General Authority of Survey
Widely used in Africa and parts of the Middle East:
- Fajr angle: 19.5°
- Isha angle: 17.5°
- Suitable for: Egypt, Sudan, Africa, and some Middle Eastern countries
4. Umm Al-Qura University, Makkah
Official method used in Saudi Arabia:
- Fajr angle: 18.5°
- Isha: 90 minutes after Maghrib (120 minutes during Ramadan)
- Suitable for: Arabian Peninsula
5. University of Islamic Sciences, Karachi
Used in Pakistan, India, Bangladesh, and Afghanistan:
- Fajr angle: 18°
- Isha angle: 18°
- Suitable for: South Asian countries
Comparison of Popular Methods
| Method | Fajr Angle | Isha Angle | Primary Region |
|---|---|---|---|
| Muslim World League | 18° | 17° | Europe, Parts of US |
| ISNA | 15° | 15° | North America |
| Egyptian Survey | 19.5° | 17.5° | Africa, Middle East |
| Umm Al-Qura | 18.5° | 90 min after Maghrib | Saudi Arabia |
| Karachi | 18° | 18° | South Asia |
How to Choose the Right Method
1. Check Local Mosque Recommendations
The most reliable approach is to use the same calculation method as your local mosque. This ensures consistency between your app and community prayer times.
2. Consider Your Geographical Region
Different methods are developed for specific regions, taking into account factors like latitude and seasonal variations:
- North America: ISNA or North America methods
- Europe: Muslim World League
- Middle East: Umm Al-Qura or Egyptian General Authority
- South Asia: University of Islamic Sciences, Karachi
3. High Latitude Regions
For locations above 48° latitude (northern Europe, Canada, etc.), standard calculation methods may not work properly during summer months when twilight persists. Our app provides special calculation adjustments for high latitudes:
- Middle of the Night: Calculates Isha as midnight and Fajr as before dawn
- One-Seventh of the Night: Divides night into seven parts
- Angle-Based Method: Uses custom angles for extreme latitudes
Pro Tip
If you're traveling, you can set the app to automatically adjust the calculation method based on your current location, ensuring accurate prayer times wherever you go.
Our Approach in the Prayer Times App
The APPNEST Prayer Times App provides all 14 standard calculation methods along with customization options. You can:
- Select from any standard calculation method
- Fine-tune angles for Fajr and Isha if needed
- Choose high latitude adjustment methods
- Save different methods for different locations
Making the Right Choice
Prayer time calculation is a matter of both religious and scientific precision. By providing multiple calculation methods, we aim to accommodate all users while respecting the diversity of Islamic traditions. Select the method that aligns with your local religious authorities or personal preference to ensure your prayers are performed at the correct times.