At the end of season 1,when Nupur gives Mayank the divorce papers,the date of their marriage was 26th may,2009.After the 3 year leap in S2,once Mayank writes the date on board as 7th october,2010.In MJHT after 3 yrs,its still 2010 instead of 2012.😉😉
Guess they all wanted to forget the 3 yrs of Nupur's absence..