What timetable should I follow for suhoor?

What timetable should I follow for suhoor?

There are several methods for calculating the time of Fajr prayer, based on different astronomical calculations and interpretations. Common methods include:

  1. Fixed Time: This method relies on using a fixed time before sunrise to determine the beginning of Fajr. It could be based on a fixed duration before sunrise, such as one hour or one and a half hours. However, this method doesn’t take into account variations in the duration of twilight throughout the year and at different latitudes.
  2. 18-Degree Method (Muslim World League): This method calculates Fajr as the time when the sun is 18 degrees below the horizon. It’s widely used by organizations like the Muslim World League and is considered suitable for locations with moderate latitudes.
  3. 15-Degree Method (Islamic Society of North America – ISNA): Similar to the 18-degree method, this method calculates Fajr as the time when the sun is 15 degrees below the horizon. It’s commonly used in North America and other regions with high latitudes where the twilight duration is longer.
  4. Twilight Angle Methods: These methods determine Fajr based on specific angles of twilight, such as civil twilight (when the sun is 6 degrees below the horizon), nautical twilight (12 degrees below the horizon), or astronomical twilight (18 degrees below the horizon). The choice of angle can vary depending on local customs and preferences.
  5. Calculation Based on True Dawn: Some scholars advocate for calculating Fajr based on the time of “true dawn,” which is the moment when the sky starts to lighten but before the appearance of the actual sunrise. This method relies on more precise astronomical calculations to determine the time of Fajr.

As long as the calculations have been done are done by a legitimate method and reliable. Sometimes the timing varies by 5-10 minutes for suhoor time. If you use one method such as your app during the year, there’s no harm in switching to another timetable such as your local mosque, but it’s better to be consistent. It is better to err on the side of caution with Fajr and choose the earlier time.

Shaykh Haytham Tamim – 24th March 2024

Transcribed by Rose Roslan


Shaykh Haytham Tamim is the founder and main teacher of the Utrujj Foundation. He has provided a leading vision for Islamic learning in the UK, which has influenced the way Islamic knowledge is disseminated. He has orchestrated the design and delivery of over 200 unique courses since Utrujj started in 2001. His extensive expertise spans over 30 years across the main Islamic jurisprudence schools of thought. He has studied with some of the foremost scholars in their expertise; he holds some of the highest Ijazahs (certificates) in Quran, Hadith (the Prophetic traditions) and Fiqh (Islamic rulings). His own gift for teaching was evident when he gave his first sermon to a large audience at the age of 17 and went on to serve as a senior lecturer of Islamic transactions and comparative jurisprudence at the Islamic University of Beirut (Shariah College). He has continued to teach; travelling around the UK, Europe and wider afield, and won the 2015 BISCA award (British Imams & Scholars Contributions & Achievements Awards) for Outstanding Contribution to Education and Teaching.