Date string: Fri, 03 Oct 2014 21:14:01 EST

I can get NSDate from above string using below code in iOS 7:

@"EEE, dd MMM yyyy HH:mm:ss z"

While in iOS 8 I am getting nil date and I have tried following formats to get NSDate but no luck.

@"EEE, dd MMM yyyy HH:mm:ss Z"
@"EEE, dd MMM yyyy HH:mm:ss ZZZ"

Can anybody help me on this?

Tushar