ok, during peak time it took me two weeks to get an appointment and during non peak time, one of my friends got an appointment in a week.  they hold my passport for a day, but i went to pick it up after 2 days.  ;)

so, one week to two weeks is what you should expect.  However, during rush time, it might go more than that.  also note that you need stamp from labor department in nepal, which takes at least a day if you pay some money to those brokers.  i did nt do that though and i had hard time convincing people at airport. i never mentioned that i am working and so on, i just told them this is different visa category as USA has so many visa category such as F1, J1, B1 and so on and they let me go.  however, it is recommended to have that stamp on your passport to avoid any kind of trouble at the airport.  you dont wanna miss your flight for 3000-4000 rupees, do you?