What month is the hajj?

Hajj is during the 12th month of the lunar calendar. This year, it is expected to start somewhere between the 25th and 28th of November.

Since the lunar calendar is approximately 11 days shorter than the solar calender, next year's Hajj will start around the 14th to 17th of November. 2011's will be around 3rd to 6th of November. Etc, etc.

It is difficult to know the exact day before time, since it is based on the cycles of the moon.