Washington D.C. zone
EDT (GMT-4)
Kolkata zone
GMT+5:30 (GMT+5:30)
Difference
9h 30m ahead of Washington D.C.
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in Washington D.C.. Filled cells mark when 9 AM – 5 PM in Washington D.C. and Kolkata both apply.
0 hours per day
- Washington D.C.
- GMT-4
- Kolkata
- GMT+5:30
- Difference
- +9h 30m
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in Kolkata for an hour in Washington D.C..
| Washington D.C. | Kolkata | Day | Window |
|---|---|---|---|
| 12:00 AM | 9:30 AM | same day | — |
| 1:00 AM | 10:30 AM | same day | — |
| 2:00 AM | 11:30 AM | same day | — |
| 3:00 AM | 12:30 PM | same day | — |
| 4:00 AM | 1:30 PM | same day | — |
| 5:00 AM | 2:30 PM | same day | — |
| 6:00 AM | 3:30 PM | same day | — |
| 7:00 AM | 4:30 PM | same day | — |
| 8:00 AM | 5:30 PM | same day | — |
| 9:00 AM | 6:30 PM | same day | — |
| 10:00 AM | 7:30 PM | same day | — |
| 11:00 AM | 8:30 PM | same day | — |
| 12:00 PM | 9:30 PM | same day | — |
| 1:00 PM | 10:30 PM | same day | — |
| 2:00 PM | 11:30 PM | same day | — |
| 3:00 PM | 12:30 AM | next day | — |
| 4:00 PM | 1:30 AM | next day | — |
| 5:00 PM | 2:30 AM | next day | — |
| 6:00 PM | 3:30 AM | next day | — |
| 7:00 PM | 4:30 AM | next day | — |
| 8:00 PM | 5:30 AM | next day | — |
| 9:00 PM | 6:30 AM | next day | — |
| 10:00 PM | 7:30 AM | next day | — |
| 11:00 PM | 8:30 AM | next day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in Washington D.C. and Kolkata do not overlap. Plan calls for early Washington D.C. morning or late Washington D.C. evening, and rotate the burden between sides.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Washington D.C. time to Kolkata time
Washington D.C. follows the America/New_York time zone (currently EDT, GMT-4), while Kolkata follows Asia/Kolkata (currently GMT+5:30, GMT+5:30). Kolkata is 9h 30m ahead of Washington D.C. right now.
Washington D.C. observes daylight saving time, while Kolkata does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
Washington D.C.
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Kolkata
Does not observe daylight saving time.
Reverse this conversion
Kolkata to Washington D.C.
Open the converter
Plan a meeting between Washington D.C. and Kolkata
More conversions from Washington D.C.
Frequently asked questions
- How many hours is Washington D.C. from Kolkata?
- Kolkata is 9h 30m ahead of Washington D.C. right now.
- What time is 9:00 AM Washington D.C. in Kolkata?
- 9:00 AM in Washington D.C. is 6:30 PM in Kolkata.
- What time is 5:00 PM Washington D.C. in Kolkata?
- 5:00 PM in Washington D.C. is 2:30 AM (next day) in Kolkata.
- When do Washington D.C. and Kolkata business hours overlap?
- Standard 9 AM - 5 PM working hours in Washington D.C. and Kolkata do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between Washington D.C. and Kolkata?
- Washington D.C. observes daylight saving time while Kolkata does not, so the offset between them changes by one hour twice a year.
Local time page
Time in Washington D.C.
Local time page
Time in Kolkata