Fasting Calendar

Voluntary fasts, from where you are

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Next up: 13th of Rabi' al-Thani 1448 AH Sep 24

September 2026

Rabi' al-Awwal–Rabi' al-Thani 1448 AH

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Thu, Sep 24, 2026

13th of Rabi' al-Thani 1448 AH

The White Days (Ayyam al-Bid)Thursday

The White Days (Ayyam al-Bid)

The 13th, 14th and 15th of every Hijri month — three days whose reward the Prophet ﷺ likened to fasting the entire year.

Thursday: Paired with Monday as the two days deeds are raised to Allah — the Prophet ﷺ said he liked to be fasting when that happened.

Hadith & sources

The White Days (Ayyam al-Bid)

Sahih al-Bukhari 1975 · Abdullah bin Amr bin Al-As

The Messenger of Allah commanded us to fast the three days of Al-Bid, the thirteenth, fourteenth and fifteenth.

Sunan an-Nasa'i 2422 · Abu Dharr · Hasan (Darussalam)

Thursday

Deeds of people are presented (to Allah) on Mondays and Thursdays. So I like that my actions be presented while I am fasting.

Jami at-Tirmidhi (via Riyad as-Salihin 1256) Riyad as-Salihin 1256 · Abu Hurairah · Hasan (at-Tirmidhi)

Hadith & Wisdom of Voluntary Fasting

Mondays & Thursdays

الاثنين والخميس
Deeds of people are presented (to Allah) on Mondays and Thursdays. So I like that my actions be presented while I am fasting.
Jami` at-Tirmidhi (Hasan) / Musnad Ahmad cf. Tirmidhi, via Riyad as-Salihin 1256 · Abu Hurairah · Hasan (at-Tirmidhi)
It is (the day) when I was born and revelation was sent down to me.
Sahih Muslim 1162 · Abu Qatada al-Ansari