| Current: | IST — India Standard Time |
|---|---|
| Current Offset: | UTC/GMT +5:30 hours |
| Difference: | 10:30 hours ahead of Columbus |
1947 Time Zones - Kolkata
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The graph above shows that there is no clock change in Kolkata during 1947.
Note that Kolkata uses a special half-hour time zone.
Time Changes in Kolkata Over the Years
Daylight Saving Time (DST) changes do not necessarily occur on the same date every year.
| Year | Date & Time | Abbreviation | Time Change | Offset After |
|---|---|---|---|---|
| 1925 — 1940 | No changes, UTC +5:30 hours all of the period | |||
| 1941 | Wed, Oct 1 at 12:00 am | IST → +0630 | +1 hour (DST start) | UTC+6:30h |
| 1942 | Fri, May 15 at 12:00 am | +0630 → IST | -1 hour (DST end) | UTC+5:30h |
| Tue, Sep 1 at 12:00 am | IST (not changed) | +1 hour (DST start) | UTC+6:30h | |
| 1943 — 1944 | No changes, UTC +6:30 hours all of the period | |||
| 1945 | Mon, Oct 15 at 12:00 am | IST (not changed) | -1 hour (DST end) | UTC+5:30h |
| 1946 — 1949 | No changes, UTC +5:30 hours all of the period | |||
| * All times are local Kolkata time. | ||||
More Information
Time Zone Map
Try Our Interactive Time Zone Map
Time Zone Tools
- Meeting Planner - Find a suitable time for an international meeting.
- Time Zone Converter - If it is 3 pm in New York, what time is it in Sydney?
- Event Time Announcer/Fixed Time - Show local times worldwide for your event.
Kolkata
India
1:12
46
pm
Wednesday, February 4, 2026