Jashn of Mohsinaan-e-Islam, Hadhrat Abu talib & Hadhrat Khadija

Rabii-ul-Awwal: Important Dates

Some important events of this month of Rabii-ul-Awwal are as follows:
1st - Martyrdom of Hadhrat Mohsin (a.s) 
1st - Hijrat-e-Madina, Imam Ali (a.s.) slept on the bed of Prophet(saws) to save his life
4th - Death of lady Fatima Masooma-e-Qom (a.s.) - 183 A.H. (alt date)
8th - Martyrdom of Imam Hasan Al-Askari (a.s.) - 260 A.H.
9th - Eid-e-Zahra (s.a.)
10th - Death of Hazrat Abdul-Mutalib (a.r.) - Grandfather of Prophet Mohammad (p.b.u.h.), in the 8th year of his birth
10th - Marriage of the prophet Mohammad (p.b.u.h.) with lady Khadijah (a.s.)
15th - Building Quba'a mosque (1st mosque in Islam)
17th - Birth /Zahoor of the Prophet Mohammad (p.b.u.h.) 53 before Hijra  |Ziarat
17th- Birth of Imam Jafar Al-Sadiq(a.s.) - 82 A.H.
25th- Death of Hazrat Abu Talib (a.s.) Mohsin-e-Islam.

(source: Duas.org)