Skip to content
Global ClockTime zone converter & meeting planner
PAGES
SETTINGS
Clock
Working hours
Start
09
End
18
Theme

AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

IST to SGT

IST is UTC+5:30 and SGT is UTC+8 today — SGT is 2½ hours ahead of IST. Abbreviations are for reading: this page resolves IST to Asia/Kolkata and SGT to Asia/Singapore, which are the names that do not go ambiguous.

IST: India — Irish and Israel Standard Time share the letters.

The working day, side by side

Hours shaded in both rows are inside working hours on both sides. Current abbreviations: IST and UTC+8.

IST and SGT hour by hour, with the working-hour overlap shaded
City00:00 in IST01:00 in IST02:00 in IST03:00 in IST04:00 in IST05:00 in IST06:00 in IST07:00 in IST08:00 in IST09:00 in IST10:00 in IST11:00 in IST12:00 in IST13:00 in IST14:00 in IST15:00 in IST16:00 in IST17:00 in IST18:00 in IST19:00 in IST20:00 in IST21:00 in IST22:00 in IST23:00 in IST
IST——000102030405060708091011121314151617181920212223
SGT——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with IST and SGT

Open in the PlannerAdd more cities or zones, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep IST, SGT and other zones on screen as live clocks, under an animated sky and sun.

Common questions

What is IST in SGT?

SGT is 2½ hours ahead of IST today: noon in IST is 14:30 in SGT.

Is IST the same all year?

India — Irish and Israel Standard Time share the letters. An abbreviation describes an offset at a moment, not a place — the zone identifier Asia/Kolkata is the unambiguous name.

When can IST and SGT meet?

Working hours overlap for 6 hours a day: the shaded overlap is 12:00–18:00 in SGT (09:00–15:00 your time).

IST converted to other zones