Apple Mac and Unix timestamps
问题 I know that the primary timestamp on Apple systems is the CF Absolute Time value (also called Mac Absolute Time), which is a 32-bit integer calculated by the number of seconds since 01/01/2001 00:00:00 UTC. For example, 219216022 when decoded is Thu, 13 December 2007 05:20:22 UTC. Are there any other timestamps used on Mac/Unix systems (other than the default Unix timestamp which is a 32-bit integer calculated in seconds since 01/01/1970 00:00:00 UTC)? 回答1: The NSDate object has