I dont have problems any sunday, I thought may be most of the members had problem coming on 4th because of the confusion that Holi is also on 4th.
As Ratan said its a very short notice, and also since most of us have made arrangements already for the event, it would be hard to reschedule later. Chalo agar kuch rang lage to kya hua, hum bhi shamil honge unke saath ;) thaaki holi bhi manaye aur Anniversary bhi :p (Just kidding dont take this line seriously). Cheers Chaitanya
