What it is and when it occurs
White Days (Ayyam al-Bid) occurs on 13–15 of most Hijri months. Lunar dates begin at sunset and may map to different civil dates by method.
Significance and authentic evidence
Authentic reports encourage fasting these three bright moonlit days as monthly voluntary worship.
Recommended actions: a practical plan
Fast all three when able; any three monthly days also fulfill the broader practice.
- Protect obligatory prayers.
- Choose the established act relevant to this date.
- Add sincere repentance, Qur’an, remembrance and service.
- Confirm local dates and personal rulings with a trusted authority.
Du‘a and dhikr
No White-Days-specific du‘a is established.
Common misconceptions and cautions
The 13th of Dhul Hijjah is a Day of Tashriq and generally is not fasted.
Frequently asked questions
When does White Days (Ayyam al-Bid) occur?
13–15 of most Hijri months. Hijri dates begin at sunset; Gregorian equivalents may differ by a day.
Is there a special du‘a or prayer?
Only reliably supported practices are called date-specific. General Qur’anic and Prophetic supplications remain appropriate.
How do I confirm the date?
Use the IslamCal calendar and follow the calendar or sighting authority accepted by your community.