Muharram is first month of Islamic year, In islamic history Islamic month of Muharram preserve so many historic movements and events some are as below : 

Hijri Date Events
2 Muharram Imam Husayn ibn Ali a.s enters Karbala and establishes camp. Yazid's forces are present. 61 AH (680 AD).
7th Muharram Access to water was banned to Husayn ibn Ali by Yazid's orders. 61 AH (680 AD).
10 Muharram Day of Ashura, Shahadat of Imam Hussain (A.S.) 61 AH (680 AD)
25 Muharram Shahadat of 4th Imam Zain ul-Abideen (A.S.)