Guwahati runs on UTC+5:30 (IST) every day of the year, with no daylight saving time.
Guwahati and your time
Guwahati at a glance
| Country | India |
|---|---|
| Region | Assam |
| Time zone | Asia/Kolkata |
| Abbreviation now | IST |
| UTC offset now | UTC+5:30 |
| Daylight saving time | Not observed |
| Coordinates | 26.18° N, 91.75° E |
Time zone in Guwahati
Guwahati follows the Asia/Kolkata time zone and stays on UTC+5:30 all year. The tz database records no daylight saving time here since 1970.
Because UTC+5:30 ends in :30, a call booked on the hour in London or New York starts at half past the hour in Guwahati.
All of India keeps the same time, so Guwahati reads the same clock as New Delhi.
Clock changes in Guwahati, 2026 and 2027
No clock changes are scheduled in Guwahati for 2026 or 2027.
Time difference between Guwahati and other cities
When it is 9:00 AM in Guwahati, it is 10:30 PM (previous day) in New York, 2:30 PM in Sydney and 7:30 PM (previous day) in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 10 h 30 min behind | 10 h 30 min behind | 9 h 30 min behind | None |
| Los Angeles (United States) | --:-- | 13 h 30 min behind | 13 h 30 min behind | 12 h 30 min behind | None |
| London (United Kingdom) | --:-- | 5 h 30 min behind | 5 h 30 min behind | 4 h 30 min behind | 2 h 30 min |
| Paris (France) | --:-- | 4 h 30 min behind | 4 h 30 min behind | 3 h 30 min behind | 3 h 30 min |
| Dubai (United Arab Emirates) | --:-- | 1 h 30 min behind | 1 h 30 min behind | 1 h 30 min behind | 6 h 30 min |
| Singapore | --:-- | 2 h 30 min ahead | 2 h 30 min ahead | 2 h 30 min ahead | 5 h 30 min |
| Tokyo (Japan) | --:-- | 3 h 30 min ahead | 3 h 30 min ahead | 3 h 30 min ahead | 4 h 30 min |
| Sydney (Australia) | --:-- | 5 h 30 min ahead | 5 h 30 min ahead | 4 h 30 min ahead | 2 h 30 min |
| UTC | --:-- | 5 h 30 min behind | 5 h 30 min behind | 5 h 30 min behind | 2 h 30 min |
Guwahati never changes its clocks, but many of these cities do. Where the January and July columns disagree, the gap shifts when the other city moves to or from daylight saving time.
Shared office hours counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Daylight in Guwahati
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Day length in Guwahati runs from 10 hours 30 minutes at the December solstice to 13 hours 47 minutes at the June solstice. The latest sunset, at 6:19 PM, comes on July 2.
Daylight through the year in Guwahati
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 5:27 AM | 5:34 PM | 12 h 7 min |
| June solstice | June 21 | 4:31 AM | 6:18 PM | 13 h 47 min |
| September equinox | September 23 | 5:12 AM | 5:19 PM | 12 h 7 min |
| December solstice | December 22 | 6:06 AM | 4:36 PM | 10 h 30 min |
Clock time and sun time in Guwahati
Guwahati lies close to the centre of its time zone, so the sun is highest at about 11:25 AM on standard time, close to clock noon.
Cities near Guwahati
Only 143 km (89 mi) away, Sylhet in Bangladesh is 30 minutes ahead of Guwahati. Crossing between the two means resetting your watch.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Shillong | 70 km (43 mi) | --:-- | Same time |
| Nagaon | 94 km (58 mi) | --:-- | Same time |
| Sylhet (Bangladesh) | 143 km (89 mi) | --:-- | 30 min ahead |
| Silchar | 184 km (114 mi) | --:-- | Same time |
| Dimapur | 200 km (124 mi) | --:-- | Same time |
| Mymensingh (Bangladesh) | 208 km (129 mi) | --:-- | 30 min ahead |
| Sherpur (Bangladesh) | 216 km (134 mi) | --:-- | 30 min ahead |
| Jamalpur (Bangladesh) | 229 km (142 mi) | --:-- | 30 min ahead |
More cities in India
All time zones and cities in India
Tools for time in Guwahati
- Convert a time to or from Guwahati: pick a date and time and see it in every city on your list.
- Add Guwahati to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Guwahati and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Guwahati in?
Guwahati uses the Asia/Kolkata time zone, which is UTC+5:30 (IST) all year.
Does Guwahati use daylight saving time?
No. Guwahati stays on UTC+5:30 all year, so the time difference to places without daylight saving time never changes.
What is the time difference between Guwahati and New York?
Guwahati is 10 hours 30 minutes ahead of New York in January and 9 hours 30 minutes ahead of New York in July, because New York moves its clocks for daylight saving time and Guwahati does not.
Is Guwahati on the same time as New Delhi?
Yes. Guwahati and New Delhi both use UTC+5:30 right now.
How long is the longest day in Guwahati?
About 13 hours 47 minutes, around the June solstice. The shortest day, around the December solstice, has about 10 hours 30 minutes of daylight.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.