JST to SGT converter

Japan Standard Time (JST) is UTC+9 with no daylight saving. It covers Tokyo, Osaka and Sapporo (Seoul shares the same clock).

Singapore Time (SGT) is UTC+8 with no daylight saving. It covers Singapore (Hong Kong and Perth share the same clock).

Singapore Time is typically 1 hours behind Japan Standard Time, all year round — neither zone observes daylight saving.

Best time to call Singapore Time from Japan Standard Time

Office hours overlap for about 7 hours a day: 10:00 AM–5:00 PM in Japan Standard Time is 9:00 AM–4:00 PM in Singapore Time. Book calls inside this window and nobody is out of hours.