How to convert long timestamp to UTC timestamp on Objective C

Posted by David on Stack Overflow See other posts from Stack Overflow or by David
Published on 2010-04-15T18:13:36Z Indexed on 2010/04/18 21:33 UTC
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objective-c

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iphone

Hey I had a iphone app, the code has a method to retrieve current time stamp from iphone and upload to server. Here is my code: long long timestampMillis = (long long)([[NSDate date] timeIntervalSince1970] * 1000); However, one of customer use the app in Japan sent data shown on server is tomorrow time. How can I retrieve UTC timestamp?

Thanks advanced

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