Islam Holy Days
| Holiday | 2026–27 | 2027–28 | 2028–29 | |
 | Arba’een – Shia Islam Marks the fortieth day after the martyrdom of Imam Husayn at Karbala and is observed with mourning, prayer, and pilgrimage. | Expected Aug 3–4, 2026 | Expected July 24–25, 2027 | Expected July 13–14, 2028 |
| End of Safar – Shia Islam Some Shia communities observe the closing days of Safar with mourning and remembrance. | Expected Aug 12–13, 2026 | Expected Aug 2–3, 2027 | Expected July 22–23, 2028 |
| Mawlid al-Nabi – Islam Commemorates the birth of the Prophet Muhammad; Sunni and Shia communities may observe different dates. | Expected Aug 25–26, 2026 (Sunni); Aug 30–31 (Shia) | Expected Aug 14–15, 2027 (Sunni); Aug 19–20 (Shia) | Expected Aug 3–4, 2028 (Sunni); Aug 8–9 (Shia) |
| Wiladat of Zaynab bint Ali – Shia Islam Honors the birth of Zaynab bint Ali, revered for her courage, eloquence, and leadership after Karbala. | Expected Oct 16, 2026 | Expected Oct 5, 2027 | Expected Sept 24, 2028 |
| Fatimiyyah – Shia Islam Periods of mourning for Fatimah al-Zahra; dates and length vary among Shia communities. | Expected Oct 24–26 and Nov 13–15, 2026 | Expected Oct 13–15 and Nov 2–4, 2027 | Expected Oct 2–4 and Oct 21–23, 2028 |
| Wiladat of Fatimah al-Zahra – Shia Islam Celebrates the birth of Fatimah, daughter of the Prophet Muhammad and central figure in the Ahl al-Bayt. | Expected Nov 30, 2026 | Expected Nov 19, 2027 | Expected Nov 7, 2028 |
| Wiladat of Imam Ali – Shia Islam Honors the birth of Imam Ali ibn Abi Talib, the first Imam in Shia Islam. | Expected Dec 22, 2026 | Expected Dec 11, 2027 | Expected Nov 30, 2028 |
| Mab’ath – Shia Islam Commemorates the commissioning of the Prophet Muhammad and the beginning of his prophetic mission. | Expected Jan 5, 2027 | Expected Dec 25, 2027 | Expected Dec 14, 2028 |
| Laylat al-Bara’ah / Birth of Imam al-Mahdi – Islam/Shia Islam A night of prayer and seeking forgiveness; Shia Muslims also commemorate the birth of the twelfth Imam. | Expected Jan 23, 2027 | Expected Jan 12, 2028 | Expected Dec 31, 2028 |
| Ramadan – Islam Sacred month of fasting from dawn to sunset, prayer, reflection, charity, and community. | Begins sunset Feb 7; fasting Feb 8–Mar 8, 2027 | Begins sunset Jan 27; fasting Jan 28–Feb 25, 2028 | Begins sunset Jan 15; fasting Jan 16–Feb 13, 2029 |
| Martyrdom of Imam Ali – Shia Islam Commemorates the martyrdom of Imam Ali, who was fatally wounded while praying in Kufa. | Expected Feb 28, 2027 | Expected Feb 17, 2028 | Expected Feb 5, 2029 |
| Laylat al-Qadr / Night of Power – Islam The holiest nights of Ramadan, associated with the first revelation of the Qur’an; communities emphasize different odd-numbered nights. | Expected around Mar 6, 2027 | Expected around Feb 23, 2028 | Expected around Feb 11, 2029 |
| Eid al-Fitr – Islam Festival of Breaking the Fast, marked by communal prayer, charity, family gathering, and celebration. | Expected Mar 9, 2027 | Expected Feb 26, 2028 | Expected Feb 14, 2029 |
| Day of Arafah / Waqf al-Arafah – Islam The central day of Hajj; pilgrims gather at Arafat, and many Muslims elsewhere fast and pray. | Expected May 15, 2027 | Expected May 4, 2028 | Expected Apr 23, 2029 |
| Eid al-Adha – Islam Festival of Sacrifice commemorating Ibrahim’s obedience to God, marked by prayer, charity, and community gathering. | Expected May 16–17, 2027 | Expected May 5–6, 2028 | Expected Apr 24–25, 2029 |
| Eid al-Ghadir – Shia Islam Commemorates the Prophet Muhammad’s declaration at Ghadir Khumm and is associated in Shia tradition with Imam Ali’s spiritual authority. | Expected May 24, 2027 | Expected May 13, 2028 | Expected May 2, 2029 |
| Hijri New Year / Islamic New Year – Islam Marks the beginning of Muharram and the Islamic lunar year, recalling the Hijra from Mecca to Medina. | Expected June 6, 2027 | Expected May 25, 2028 | Expected May 14, 2029 |
| Ashura – Islam For Shia Muslims, mourns the martyrdom of Imam Husayn at Karbala; many Sunni Muslims observe fasting and remembrance. | Expected June 15, 2027 | Expected June 3, 2028 | Expected May 23, 2029 |
Islamic dates are estimates and may shift by a day based on lunar sighting, calculation method, and local community practice. Observances begin at sunset on the preceding evening unless otherwise noted.
Note: Dates may vary based on moon sightings and regional observance.
Accommodation Note
This calendar is provided for planning and awareness. Listing an observance does not, by itself, guarantee an excused absence or a particular accommodation. Students should contact faculty early to discuss potential conflicts. Requests are considered individually under applicable university policy and course requirements; faculty may support additional observances when feasible.