Date and Time Programming Guide for Cocoa
PDF
Introduction
Dates
Calendars, Date Components, and Calendar Units
Calendrical Calculations
Using Time Zones
Legacy API: NSCalendarDate
Revision History
RELATED REFERENCE
OBJECTIVE-C
NSCalendar
NSDate
NSDateComponents
NSLocale
NSTimeZone
RELATED DOCUMENTS
Dates and Times Programming Guide for Core Foundation
Data Formatting Programming Guide for Cocoa