Mardi Gras for the year 2012 is celebrated/ observed on February 21.
Mardi Gras or Fat Tuesday or sometimes called Shrove Tuesday falls the day before Ash Wednesday which is the start of Lent for Christians. The day includes festivals with lots of eating prior to the fast starting the next day.
More information on Mardi Gras. (Dates, Customs and History for Mardi Gras)
Days till Mardi Gras 2012
There are -2097 days until the celebration/ observance of Mardi Gras 2012.