JST to NZST converter
Japan Standard Time → New Zealand Time
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Japan Standard Time (JST) is UTC+9 with no daylight saving. It covers Tokyo, Osaka and Sapporo (Seoul shares the same clock).
New Zealand Time (NZST) is UTC+12 and observes daylight saving (NZDT, UTC+13, roughly September–April). It covers Auckland, Wellington and Christchurch.
New Zealand Time is typically 3 hours ahead of Japan Standard Time, though daylight saving can shift the difference by an hour at some times of year.
Best time to call New Zealand Time from Japan Standard Time
Office hours overlap for about 5 hours a day: 9:00 AM–2:00 PM in Japan Standard Time is 12:00 PM–5:00 PM in New Zealand Time. Book calls inside this window and nobody is out of hours. Daylight saving can shift these times by an hour at some points in the year.
JST to NZST, hour by hour
Today's actual offsets. Rows where both zones are inside 9am–5pm working hours are highlighted.