Sunnah fasting days in September 2025

September 2025 spans Rabi' al-awwal 1447 – Rabi' al-thani 1447 AH on the standard Umm al-Qura reckoning. Below is every recommended fasting day in the month with its exact date. If your community's moon sighting runs a day ahead or behind, shift the Hijri dates by one day — the converter and calendar feed both have a ±1 sync setting for exactly this.

9 Rabi' al-awwal 1447 AH Monday fast
12 Rabi' al-awwal 1447 AH Thursday fast
13 Rabi' al-awwal 1447 AH White Day (Ayyam al-Beed)
16 Rabi' al-awwal 1447 AH Monday fast
19 Rabi' al-awwal 1447 AH Thursday fast
23 Rabi' al-awwal 1447 AH Monday fast
26 Rabi' al-awwal 1447 AH Thursday fast
30 Rabi' al-awwal 1447 AH Monday fast
3 Rabi' al-thani 1447 AH Thursday fast
7 Rabi' al-thani 1447 AH Monday fast

To understand any of these days — the White Days, Mondays & Thursdays, Ashura, Arafah — the blog walks through each one with sources quoted verbatim.

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