Offset
The time difference between Washington and Chennai is 9.5 hours.
Washington (EDT) is behind Chennai (IST).
EDT: UTC-4
IST: UTC+5:30
Washington is currently observing daylight saving time; Chennai is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Washington and Chennai don't overlap on the same weekday. Chennai is 10 hours ahead of Washington.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in Washington (4 PM–8 PM in Chennai) — suggest 9:00 AM Washington (6:30 PM Chennai).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Washington uses Eastern Time (EST, or EDT). To call United States, dial +1.
Chennai uses India Standard Time (IST). To call India, dial +91.
Chennai is approximately 8,550 miles northeast of Washington.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Washington | Chennai | Day |
|---|---|---|
| 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 | +1 day |
| 4:00 pm | 1:30 am | +1 day |
| 5:00 pm | 2:30 am | +1 day |
| 6:00 pm | 3:30 am | +1 day |
| 7:00 pm | 4:30 am | +1 day |
| 8:00 pm | 5:30 am | +1 day |
| 9:00 pm | 6:30 am | +1 day |
| 10:00 pm | 7:30 am | +1 day |
| 11:00 pm | 8:30 am | +1 day |
Daylight saving time
Washington observes daylight saving time; Chennai does not. The offset between the two zones changes when Washington transitions: on Sunday, November 1, 2026, clocks fall back from EDT to EST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:44 AM
- Sunset
- 8:32 PM
- Day length
- 14h 48m
- Sunrise
- 5:43 AM
- Sunset
- 6:35 PM
- Day length
- 12h 52m
Daylight overlap: 19m — 8:13 PM–8:32 PM in Washington (5:43 AM–6:02 AM in Chennai). Both locations are in daylight during this window.
Cities in these zones
Other cities in Eastern Time
Other cities in India Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Related conversions
Common conversions
- What is 9:00 am Washington in Chennai?
- 9:00 am Washington is 6:30 pm Chennai.
- What is 12:00 pm Washington in Chennai?
- 12:00 pm Washington is 9:30 pm Chennai.
- What is 12:30 pm Washington in Chennai?
- 12:30 pm Washington is 10:00 pm Chennai.
- What is 2:00 pm Washington in Chennai?
- 2:00 pm Washington is 11:30 pm Chennai.
- What is 5:00 pm Washington in Chennai?
- 5:00 pm Washington is 2:30 am Chennai, the next day.
- What is 11:30 pm Washington in Chennai?
- 11:30 pm Washington is 9:00 am Chennai, the next day.