How do I create a date string from a date without including any daylight saving?

[qnoid]

NSString* dateString = @"2012-04-01T15:37:53Z";

ISO8601DateFormatter *dateFormat = [[ISO8601DateFormatter alloc] init];
[dateFormat setIncludeTime:YES];
NSTimeZone *utcTimeZone = [NSTimeZone timeZoneWithName:@"UTC"];

NSDate* date = [dateFormat dateFromString:dateString timeZone:&utcTimeZone];

STAssertEqualObjects([dateFormat stringFromDate:date timeZone:utcTimeZone], dateString, nil, nil);

The above test fails with

'2012-04-01T16:37:53Z' should be equal to '2012-04-01T15:37:53Z'

Not sure why the NSString returned by the stringFromDate:date is 1 hour later since both dates are using UTC.

[boredzo]

This appears to be fixed nowadays. I'm not sure when; my guess was [5665132], but reverting that commit didn't break the test, so it must have been some other fix that did it.

If you see it break again in current source (the test case should make it easy to detect in future), feel free to comment here and let me know.

[qnoid]

Thanks @boredzo :)