Postpone Oath after interview

[skz]

I had my & my wife's interview scheduled on Feb 26th at San Jose, CA. But we have to travel to India for a month on 29th Feb to attend brother-in-law's marriage.
I heard that after clearing interview, usually we get Oath letter in 15 days.
What can I do to postpone my Oath ceremony as I won't be here when they will send me the letter.
Do I have to call them before & where should I call?
What documents should I need to send to postpone oath?


I will really appriciate your replies.
thanks.

[uma]

We had exactly same problem.We traveled to India in January 2008.

My husband told interviewer at the time of interview about the India travel and dates of travel . He requested to give an Oath Date after the travel date.

I did not tell at the time of interview, but I got the letter for Oath before we went to India. The oath date given to me was not suitable so according to instructions on that letter I sent them a letter, they canceled my earlirer appt (which was in Jan) and I got an appointment for a later date.

IMO, Its better to tell at the time of interview...