JST to SGT Time Converter
Singapore Time (SGT) is currently 1 hour behind Japan Standard Time (JST). JST is UTC+9 and SGT is UTC+8. The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 10:00 AM and 5:00 PM in JST, which is 9:00 AM to 4:00 PM in SGT.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: JST to SGT
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
JST and SGT are fixed offsets, so the difference between them never changes.
JST is UTC+9. Japan has no daylight saving, so this offset never changes.
SGT is UTC+8 with no daylight saving. Hong Kong, China, Malaysia, and the Philippines share this offset.
Frequently Asked Questions
How many hours behind is SGT compared to JST?
SGT is currently 1 hour behind JST. JST and SGT are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in JST in SGT?
9:00 AM in JST is 8:00 AM in SGT.
What is the best time for a call between JST and SGT?
Both sides are inside 9:00 AM to 5:00 PM office hours between 10:00 AM and 5:00 PM in JST, which is 9:00 AM to 4:00 PM in SGT.