Home/ Questions/Q 7988993
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-04T12:37:15+00:00

double duration = 20; // duration is in seconds NSDate* durationDate = [[NSDate alloc]initWithTimeIntervalSinceReferenceDate:duration];

  • 0
double duration = 20; // duration is in seconds 

NSDate* durationDate = [[NSDate alloc]initWithTimeIntervalSinceReferenceDate:duration];

NSDateFormatter *formatter = nil;


formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:@"mm:ss"];

NSString *durationString=[formatter stringFromDate:durationDate];//here durationString should have 20

but i am getting 30:20? from where this 30 min is getting added. I have tried giving bigger numbers then also same result

please let me know thoughts on this and how to solve this

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You’re probably on India Standard Time?

    The reference date is defined to be at midnight GMT. IST is GMT+5:30.

    So when you add 20 seconds to the reference date you get 20 seconds past midnight in GMT. When you then create a date formatter and don’t set anything else to it, it’ll operate in your device’s natural time zone. That means that when you ask it for the minutes and seconds at the end of the time you get 30 minutes and 20 seconds.

    NSDates are an absolute time, abstract of any time zone or calendar. If five devices in five separate time zones all call [NSDate date] simultaneously to get the current time, they’d all get objects with the same value.

    NSDateFormatter combines an NSDate with an NSCalendar and an NSTimeZone to determine minutes, seconds, hours, months, years, etc.

    • 0