//将其他时区转换当前系统时区

– (NSDate *)getNowDateFromatAnDate:(NSDate *)anyDate

{

    //设置源日期时区

    NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"UTC"];//或GMT

    //设置转换后的目标日期时区

    NSTimeZone* destinationTimeZone = [NSTimeZone localTimeZone];

    //得到源日期与世界标准时间的偏移量

    NSInteger sourceGMTOffset = [sourceTimeZone secondsFromGMTForDate:anyDate];

    //目标日期与本地时区的偏移量

    NSInteger destinationGMTOffset = [destinationTimeZone secondsFromGMTForDate:anyDate];

    //得到时间偏移量的差值

    NSTimeInterval interval = destinationGMTOffset – sourceGMTOffset;

    //转为现在时间

    NSDate* destinationDateNow = [[NSDate alloc] initWithTimeInterval:interval sinceDate:anyDate];

    

    return destinationDateNow;

}