Zilhajj dates of significance

Image via WikipediaImportance of the sacred month of Zilhajj

From ziaraat.com:

1st – Marriage of Imam Ali (A.S.) and Hazrat Fatima Zahra (S.A.)
7th – Martyrdom of Imam Mohammad Baqir (a.s.) – 114 A.H.
9th – Day of Arafa – Martyrdom of Hazrat Muslim ibn-e-Aqeel (a.s.)
10th – Hajj-e-Baitullah and Eid-ul-Azha
15th – Birth anniversary of Imam Ali Naqi (a.s.) – 212 A.H.
18th – Eid-e-Ghadeer – 10 A.H.
19th or 23rd – Martyrdom of Hazrat Meesum-e-Tammar (a.r.)
22nd - Martyrdom of Sons of Hazrat Muslim (A.S.)
24th – Eid-e-Mubahila – 10 A.H.
24th – Supplication day and giving of alms during Rukoo by Imam Ali (A.S.)
25th – Acceptance of formal Khilafat by Imam Ali (A.S.)

29th of Zilqad: Anniversary of the Martrydom of Imam Muhammad Taqi (A.S.)

English: Kadhimayn Mosque - Shrine of the 7th and 9th Shia Imams: Musa al-Kadhim & Muhammad at-Taqi. (Baghdad, Iraq) (Photo credit: Wikipedia)

Sermons on the anniversary of the martrydom of our 9th holy Imam, Imam Muhammad Taqi al-Jawwad (A.S.) by Respected Alim, Hujjatul Islam Wal Muslimeen Sayyid Muhammad Rizvi

September 23, 2015 - 1436 - barnburner
October 5, 2013 - 1434
October 15, 2012 - 1433 Excellent content on  equality of women, and importance of seeking knowledge for both men and women

October 27, 2011 - 1432 

October 28, 2011 - 1432  (more discussed on the day of martyrdom during Juma sermon)