How to change time and timezone in iPhone simulator?

Question

How do I change time and time zone in the iPhone simulator?

Answer 1

My build server is UTC and some of my unit tests needed the timezone to be PST. Using a category on NSTimeZone you can override Apple's implementation to use your code. Works for swift only projects too.

//NSTimeZone+DefaultTimeZone.h
#import 

@interface NSTimeZone (DefaultTimeZone)

+(NSTimeZone *)defaultTimeZone;

@end

//NSTimeZone+DefaultTimeZone.m
#import "NSTimeZone+DefaultTimeZone.h"

@implementation NSTimeZone (DefaultTimeZone)

+(NSTimeZone *)defaultTimeZone
{
    return [NSTimeZone timeZoneWithName:@"America/Los_Angeles"];
}

@end