Time Difference: Adelaide vs Kolkata
Adelaide
11:00:54 AM ACST
Thursday, May 14, 2026
4h
4h
Kolkata
7:00:54 AM IST
Thursday, May 14, 2026
Kolkata is 4 hours behind Adelaide.
Quick Reference
- Adelaide
- ACST (GMT+9:30)
ACDT starts on Oct 3, 2026
- Kolkata
- IST (GMT+5:30)
No Daylight Saving Time
Frequently Asked Questions
- What is the time difference between Adelaide and Kolkata?
- Kolkata is 4 hours behind Adelaide.
- When is the best time to call from Adelaide to Kolkata?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Adelaide uses ACST and Kolkata uses IST.