Date: 13th, 14th, and 15th of each Islamic month (based on the Hijri Calendar).

Significance: Voluntary fasting on these days is highly rewarded and was regularly practiced by the Prophet Muhammad ﷺ.

Date: 9th day of Dhul-Hijjah (the day before Eid al-Adha).

Significance: A day of forgiveness and immense mercy. Fasting expiates sins of the previous and coming year for those not performing Hajj.

Date: 10th day of Dhul-Hijjah.

Significance: Commemorates Prophet Ibrahim’s (AS) willingness to sacrifice his son. Marked by sacrifice (Qurbani), prayer, and charity.

Date: 10th day of Muharram.

Significance: A day of fasting and reflection. Commemorates the saving of Prophet Musa (AS) and his people, and is highly rewarded when paired with fasting on the 9th or 11th.

Date: 9th month of the Islamic calendar.

Significance: A month of fasting, prayer, Qur'an recitation, and increased worship. Fasting is obligatory from dawn to sunset for all eligible Muslims.

Date: One of the last 10 nights of Ramadan, most likely on the odd nights, especially the 27th night (though exact date unknown).

Significance: The night when the Qur'an was first revealed. Worship during this night is better than 1,000 months

Date: 1st day of Shawwal (after the end of Ramadan).

Significance: Celebrates the completion of Ramadan. Marked by communal prayers, giving charity (Zakāh al-Fiṭr) and family gatherings.

Date: Any six days in the month of Shawwal, following Eid al-Fitr.

Significance: Fasting six days in Shawwal after Ramadan is like fasting the entire year in reward, as taught by the Prophet Muhammad ﷺ.