okay here's my say: 1) there is no clear cut rule for one's travel during OPT. it all depends on how you can convince those immigration officers at the port of entry in US and exit in nepal. 2) my suggestion is get some official letter from your company explaining that you are on a process and your H1 will start from this date. 3) if you can show some urgency for your travel, that would be better. 4) best bet is to wait, but then if you want to take a chance, you can. i don't think they will dney your entry if you have the letter from the company and good enough reason for your travel. 5) my suggestion is based upon what one of my friends did when he had to go to nepal because of urgency. he was in opt and his H1 was not approved then. g'luck Loote