New Zealand Standard Time (NZST) is a time zone that is used in New Zealand that is 12 hours ahead of UTC (UTC+12:00). New Zealand observes daylight saving time, called New Zealand Daylight Time (NZDT) which is 13 hours ahead of UTC (UTC+13:00). The Chatham Islands is at UTC+12:45 during standard time and UTC+13:45 during daylight saving time. The time zone there is called Chatham Island Standard Time (CHAST)during the non-daylight saving period and Chatham Island Daylight Time (CHADT)during the daylight saving period.