Live clocks
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Formula used
IST stays at UTC+05:30 throughout the year. Many US offsets change on daylight transitions. Selected dates determine automatic offsets and calendar rollover.
How to use this calculator
- Choose the required conversion direction.
- Enter the source date and time.
- Select a city, state, or time zone.
- Keep automatic daylight handling for normal conversions.
- Select comparison cities and business hours.
- Press Convert time and review every result.
- Copy, share, print, or export the results.
Example conversions
| Indian time | US location | Possible local result | Important note |
|---|---|---|---|
| 9:00 PM IST | New York | Morning or late morning | The exact hour depends on daylight time. |
| 6:30 AM IST | Los Angeles | Previous afternoon or evening | The US date may be one day earlier. |
| 12:00 PM IST | Honolulu | Previous evening | Hawaii normally uses a fixed local offset. |
| 8:00 AM IST | Guam | Late morning | Guam is ahead of Indian Standard Time. |
Frequently asked questions
What is Indian Standard Time?
Indian Standard Time uses UTC+05:30. India does not normally change clocks seasonally. This creates stable Indian offsets throughout every calendar year.
Why does the US time difference change?
Many United States regions observe daylight saving time. Their offsets change during spring and autumn transitions. Automatic mode applies date-specific timezone rules for better accuracy.
Does every US state use one time zone?
No, several states cross multiple time-zone boundaries. State mode uses a representative zone for simplicity. Choose a nearby city for more precise local results.
Why is the US date sometimes earlier?
Most US zones are behind Indian Standard Time. Evening Indian times often reach an earlier US date. The result clearly labels every previous-day calendar rollover.
Does Arizona observe daylight saving time?
Most of Arizona does not change clocks seasonally. Phoenix uses the America/Phoenix timezone in this calculator. Local exceptions should be checked before important scheduling decisions.
Does Hawaii observe daylight saving time?
Hawaii generally keeps the same clock offset yearly. Honolulu uses the Pacific/Honolulu identifier for conversions. Date-aware rules still provide the safest conversion method.
What happens during repeated US clock hours?
Autumn clock changes can repeat one local hour. That local time may represent two different instants. The calculator warns when an entered source time is ambiguous.
What happens during skipped US clock hours?
Spring transitions can skip a range of local times. Those wall-clock values never occur on that date. The calculator warns about detected skipped local-time intervals.
Can I compare several US cities?
Yes, select up to six comparison locations. Each row shows its date, time, and offset. This supports distributed teams working across several American regions.
How does the meeting planner work?
It checks fifteen-minute intervals across the Indian date. Both locations must fall inside selected working hours. The table lists every matching continuous meeting window.
Can I export the conversion?
Yes, results support copying, CSV, PDF, and printing. A calendar file uses the first meeting overlap. Shared links preserve the current form selections online.