[mac] console systemsetup date

timezone

$ sudo systemsetup -gettimezone
Time Zone: Asia/Seoul

$ sudo systemsetup -settimezone Asia/Seoul

usingnetworktime

$ sudo systemsetup -setusingnetworktime on
$ sudo systemsetup -setusingnetworktime off

networktimeserver

$ sudo systemsetup -getnetworktimeserver
Network Time Server: time.asia.apple.com

$ sudo systemsetup -setnetworktimeserver time.asia.apple.com