Tahajjud Prayer Time Calculator
Calculate the optimal time for Tahajjud prayer from Isha and Fajr times. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
Night Duration = Fajr Time - Isha Time; Each Third = Night Duration / 3
The night is divided into three equal portions from Isha to Fajr. The last third, which begins at Isha + (2/3 x Night Duration), is the most recommended time for Tahajjud prayer. A suggested wake-up time is calculated 15 minutes before the last third begins.
Worked Examples
Example 1: Standard Night Prayer Timing
Problem:Isha is at 8:30 PM and Fajr is at 5:00 AM. Calculate the last third of the night for optimal Tahajjud prayer.
Solution:Night duration: 5:00 AM - 8:30 PM = 8 hours 30 minutes = 510 minutes\nEach third: 510 / 3 = 170 minutes = 2 hours 50 minutes\nFirst third: 8:30 PM - 11:20 PM\nSecond third: 11:20 PM - 2:10 AM\nLast third: 2:10 AM - 5:00 AM\nSuggested wake-up: 1:55 AM (15 min before last third)
Result:Last third: 2:10 AM - 5:00 AM | Wake up: 1:55 AM | Available: 2h 50m for prayer
Example 2: Short Summer Night
Problem:During summer in London, Isha is at 10:30 PM and Fajr is at 2:30 AM. When should Tahajjud be prayed?
Solution:Night duration: 2:30 AM - 10:30 PM = 4 hours = 240 minutes\nEach third: 240 / 3 = 80 minutes = 1 hour 20 minutes\nFirst third: 10:30 PM - 11:50 PM\nSecond third: 11:50 PM - 1:10 AM\nLast third: 1:10 AM - 2:30 AM\nSuggested wake-up: 12:55 AM
Result:Last third: 1:10 AM - 2:30 AM | Only 1h 20m available | Pray at least 2-4 rakaat
Frequently Asked Questions
What is Tahajjud prayer and what is its significance in Islam?
Tahajjud is a voluntary (nafl) night prayer performed after sleeping some portion of the night and waking before Fajr. It holds an exceptionally high spiritual status in Islam, mentioned specifically in the Quran in Surah Al-Isra (17:79) where Allah instructs the Prophet Muhammad (peace be upon him) to pray during part of the night as an additional devotion. The Prophet described Tahajjud as the best prayer after the obligatory prayers, and it is considered one of the most effective means of drawing closer to Allah. Night prayer was a consistent practice of the Prophet and his companions, and it is during these quiet hours that supplications are believed to be most readily accepted. The spiritual benefits include increased taqwa (God-consciousness), forgiveness of sins, and strength of faith.
What is the best time to pray Tahajjud?
The most virtuous time for Tahajjud prayer is during the last third of the night, based on the hadith in Sahih al-Bukhari and Sahih Muslim where the Prophet Muhammad (peace be upon him) said that Allah descends to the lowest heaven during the last third of every night and asks if there is anyone calling upon Him, seeking His forgiveness, or asking of Him so that He may respond. To calculate the last third, determine the total night duration from Isha to Fajr, divide by three, and the final segment is the optimal window. For example, if Isha is at 8:30 PM and Fajr is at 5:00 AM, the night is 8.5 hours, each third is about 2 hours 50 minutes, and the last third begins at approximately 2:10 AM. If waking for the last third is difficult, praying in any part of the night after sleeping is still highly rewarded.
How many rakaat should be prayed for Tahajjud?
The minimum Tahajjud prayer is two rakaat, and there is no strict maximum, though the Prophet Muhammad (peace be upon him) most commonly prayed eight or eleven rakaat including Witr. The hadith of Aisha (may Allah be pleased with her) reports that the Prophet would pray eleven rakaat at night, performing them in sets of two and concluding with a single Witr rakah. Some scholars permit up to twelve or thirteen rakaat based on various hadith narrations. The prayer is performed in pairs (two rakaat at a time with salam), and it is recommended to conclude the night prayer with Witr if it has not already been prayed after Isha. Quality is more important than quantity, so it is better to pray fewer rakaat with deep concentration and longer recitation than to rush through many rakaat.
How do I divide the night into thirds for Tahajjud calculation?
Dividing the night into thirds is a straightforward calculation once you know the Isha and Fajr times for your location. First, determine the total night duration in minutes by calculating the time from Isha prayer to Fajr prayer. Then divide this total by three to get the duration of each third. The first third begins at Isha time, the second third begins one-third of the way through the night, and the last third begins two-thirds of the way through. For example, with Isha at 9:00 PM and Fajr at 4:30 AM, the night is 7 hours 30 minutes (450 minutes). Each third is 150 minutes (2 hours 30 minutes). First third: 9:00 PM to 11:30 PM. Second third: 11:30 PM to 2:00 AM. Last third: 2:00 AM to 4:30 AM.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy