Macro

NSTimeIntervalSince1970

The number of seconds from 1 January 1970 to the reference date, 1 January 2001.

Declaration

#define NSTimeIntervalSince1970

Discussion

1 January 1970 is the epoch (or starting point) for Unix time.

See Also

Getting Time Intervals

- timeIntervalSinceDate:

Returns the interval between the receiver and another given date.

timeIntervalSinceNow

The interval between the date object and the current date and time.

timeIntervalSinceReferenceDate

The interval between the date object and 00:00:00 UTC on 1 January 2001.

timeIntervalSince1970

The interval between the date object and 00:00:00 UTC on 1 January 1970.

timeIntervalSinceReferenceDate

The interval between 00:00:00 UTC on 1 January 2001 and the current date and time.