Function

CFTimeZoneIsDaylightSavingTime

Returns whether or not a time zone is in daylight savings time at a specified date.

Declaration

Boolean CFTimeZoneIsDaylightSavingTime(CFTimeZoneRef tz, CFAbsoluteTime at);

Parameters

tz

The time zone to analyze.

at

The date in tz to test for daylight savings.

Return Value

true if tz is in daylight savings time at at, otherwise false.

See Also

Getting Daylight Savings Time Information

CFTimeZoneGetDaylightSavingTimeOffset

Returns the daylight saving time offset for a time zone at a given time.

CFTimeZoneGetNextDaylightSavingTimeTransition

Returns the time in a given time zone of the next daylight saving time transition after a given time.