CHAST timing
CHAST (Chatham Standard Time) is one of the well-known names of UTC+12:45 time zone which is 12:45h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +12:45.
It's used during the winter. During the summer CHADT - Chatham Daylight Time (UTC+13:45) is in use.
Time difference to GMT/UTC
+12:45 hours ahead (UTC+12:45)