NZDT (New Zealand Daylight Time) is one of the well-known names of UTC+13 time zone which is 13h. ahead of UTC (Coordinated Universal Time).The time offset from UTC can be written as +13:00.
It's used as a DST (summer daylight saving time).During the winter, NZST - New Zealand Standard Time(UTC+12) is in use.
Time difference to GMT/UTC
Iana Timezones where NZDT is currently observed