I get date in this format from web service ( oData Web Service)
/Date(847065600000)
According to this ques. How to handle json DateTime returned from WCF Data Services (OData)
This is a DateTime Object. How can I convert it to a valid iOS date format?
That number is a unix timestamp i.e. the seconds passed since 1970. You can convert it to NSDate with its initializer:
UPDATE:
I checked your number and it seems that it is actually in milliseconds. So you should divide it by 1000 before passing to dateWithTimeIntervalSince1970: to get the correct date.