Jamadi-al-Awwal

5^th - Birth of Hazrat Zainab bint-e-Ali(as) - (5 AH)

13^th - Martyrdom of Hazrat Fatima Zehra(sa) - 11 AH

15^th - Birth of Imam Zain al-Abideen(as) - the 4th Holy Imam - (38 AH)

17^th - Battle of Jamal- 36 AH

Source - Azadari.com