Depends on who you know (or anyone you know inside the consulate in NY/embassy in DC)...Normal peeps wait for about a week to get their new passports whereas I've seen a few cases where peeps got theirs in a day since they had the hookups inside.  Gotta go with one of those wannabe Nepali netas you have here or the Prez of the various ethnic community samaj here.  If you don't know one, then you're sublimely screwed.  Get ready for a waiting game, son!