SGT to JST converter
Singapore Time → Japan Standard Time
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Singapore Time (SGT) is UTC+8 with no daylight saving. It covers Singapore (Hong Kong and Perth share the same clock).
Japan Standard Time (JST) is UTC+9 with no daylight saving. It covers Tokyo, Osaka and Sapporo (Seoul shares the same clock).
Japan Standard Time is typically 1 hours ahead of Singapore Time, all year round — neither zone observes daylight saving.
Best time to call Japan Standard Time from Singapore Time
Office hours overlap for about 7 hours a day: 9:00 AM–4:00 PM in Singapore Time is 10:00 AM–5:00 PM in Japan Standard Time. Book calls inside this window and nobody is out of hours.
SGT to JST, hour by hour
Today's actual offsets. Rows where both zones are inside 9am–5pm working hours are highlighted.