Hi, This question is going to sound a little stupid.. Well, I want to apply for citizenship this month, however I forgot the exactly dates I left the US. I know 1 was in March/2005 - August-2005, and the other was Jan-2009 - Feb-2009 , but I'm not 100% sure, and I don't remember the DAYS. I already had 3 different passports during the last 5 years, and recently got my new passport, which is blank.. My old one was kept at Consulate.. What should I do? Can I call immigration and ask? I know this sound really stupid, but I'm lost.. Don't want my N-400 to be rejected for having wrong dates..