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Asked: 2026-05-15T00:00:37+00:00

I have an NSDate object and need an integer of the day. i.e. if

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I have an NSDate object and need an integer of the day. i.e. if we have 25th May 2010, the int should be 25. Is there a simple way to do it?

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  1. Editorial Team

    Note that an NSDate is just a timestamp and only has a “day” when considered with respect to a given calendar and time zone. If you want the Gregorian calendar in the current time zone,

    NSTimeZone * tz = [NSTimeZone localTimeZone];
CFAbsoluteTime at = CFDateGetAbsoluteTime((CFDateRef)date);
int day = CFAbsoluteTimeGetGregorianDate(at, (CFTimeZoneRef)tz).day;

    If you want the UTC day, set tz = nil.

    Also, CFAbsoluteTime and NSDate are (as far as I know) based on POSIX time which specifies a 86400-second day, and thus do not handle leap seconds.

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