Why do Islamic dates change each year?

Islamic dates follow the Hijri lunar calendar, which has 354-355 days per year (about 11 days shorter than the Gregorian calendar). This means Islamic events shift approximately 11 days earlier each Gregorian year.

How accurate are these Islamic dates?

Our dates are calculated using astronomical algorithms. However, some Islamic dates (like Ramadan) are traditionally determined by moon sighting, which may vary by 1-2 days depending on location and religious authority.

What are the main Islamic events in September 2031?

The main Islamic events in September 2031 include: Martyrdom of Fatimah al-Zahra (as), Death of Umm al-Banin (as).

2031 Calendar

Shia Calendar September 2031

View the complete Shia calendar for September 2031. This month features 2 significant Islamic dates observed by Shia Muslims worldwide, with accurate Hijri to Gregorian date conversions for your planning needs.

Last updated: February 22, 2026

Summary

September 2031 contains 2 Shia Islamic events. This includes 2 commemorations marking solemn remembrances. All dates show both Hijri and Gregorian equivalents.

•2 Shia Islamic events in September 2031
•2 commemorations this month
•All dates in Hijri and Gregorian formats
•Events can be added to your personal calendar
•Dates accurate for 2031 (shift ~11 days each year)

Shia Calendar for September 2031

The Shia calendar for September 2031 shows all Islamic events falling within this Gregorian month. Because the Islamic Hijri calendar is lunar-based (354-355 days per year), the specific events in any given Gregorian month change from year to year. This page shows exactly which Shia religious dates occur during September 2031.

All Events in September 2031

20Sep

Commemoration

Martyrdom of Fatimah al-Zahra (as)

After the Prophet's death, a group of up to 4000 men, led by Umar ibn Khattab, demanded Ali ibn Abi-Talib's allegiance to Abu Bakr at Fatima tuz Zahra's door. Ali, preparing the Qur'an, refused. They threatened to burn the house, set fire to the door, kicked it in, injuring Fatima—breaking her rib and causing miscarriage of Al-Muhassin. On her deathbed, Fatima requested a secret night burial attended by few loyal companions like Ali, al-Hassan, al-Husayn, Ammar bin Yasir, and Salman al-Muhammadi. Her grave's location remains unknown. Ali, who lifted Khaybar's gates effortlessly, wept unable to lift her body.

3 Jumada al-Thani 1453 AH

30Sep

Commemoration

Death of Umm al-Banin (as)

Umm-ul-Banin, originally Fatima daughter of Hizam from a celebrated Arab family known for heroism and nobility, married Imam Ali after Fatima's death, on the advice of Aqil to bear a courageous son to support al-Husayn. She exceptionally cared for al-Hasan and al-Husayn, loving them more than her own four sons—al-Abbas, Abdullah, Ja’far, and Uthman—out of religious duty per the Qur’an. Revered by the Ahlul Bayt and Muslims for her loyalty and sacrifice in Karbala, she never remarried after Ali's death.

13 Jumada al-Thani 1453 AH

Key Takeaways

12 Shia Islamic events in September 2031
22 commemorations this month
3All dates in Hijri and Gregorian formats
4Events can be added to your personal calendar
5Dates accurate for 2031 (shift ~11 days each year)

Frequently Asked Questions

There are 2 Islamic events in September 2031, including 2 commemorations and 0 celebrations.