Date & time / TOOL
Time Zone Converter.
See the same instant in any world time zone, with a world clock.
This time zone converter shows the same moment in any city, with daylight saving applied automatically. At 12:00 UTC on 26 October 2026 it is 08:00 in New York, 17:30 in Kolkata and 21:00 in Tokyo. Pick a date, time and two zones below to compare them.
Updated
INTERACTIVE TOOL
Conversions use the IANA time zone database built into your browser, so UTC offsets and daylight saving time are applied automatically. If a conversion crosses midnight, the destination date is shown above.
World Clock
Add the cities you want to track. Times update every second.
Tunis, Tunisia
London, United Kingdom
New York, United States
Dubai, United Arab Emirates
Tokyo, Japan
QUICK ANSWER
To convert a time between time zones, the converter turns the local time into UTC using the source zone’s offset at that moment, then shows the same instant in the destination zone. Daylight saving time is applied automatically from the IANA time zone database.
THE METHOD
How it works
Convert the selected local date and time to UTC using the source zone’s offset at that instant, then display that instant in the destination zone. DST is handled by the IANA time zone database.
PUT IT TO USE
Example calculation
Set 09:00 in Tunis and select New York to see the exact corresponding local time, including daylight-saving changes.
US time zones at a glance
Eastern Time is UTC−5 (EST) or UTC−4 in summer (EDT); Central is UTC−6/−5; Mountain (MST) is UTC−7/−6; Pacific is UTC−8/−7. Most of Arizona stays on MST all year. See the full US time zones page for every state and zone.
In short
How to use the Time Zone Converter
- Pick the date and time you want to convert.
- Choose the time zone you are starting from, for example New York.
- Choose the time zone you want, for example Tokyo.
- Read the converted time; daylight saving time is applied automatically for that date.
Quick reference
Worked examples
| Zone | January | July |
|---|---|---|
| America/New York | GMT-5 | GMT-4 |
| America/Chicago | GMT-6 | GMT-5 |
| America/Denver | GMT-7 | GMT-6 |
| America/Phoenix | GMT-7 | GMT-7 |
| America/Los Angeles | GMT-8 | GMT-7 |
| America/Anchorage | GMT-9 | GMT-8 |
| Pacific/Honolulu | GMT-10 | GMT-10 |
| Europe/London | GMT+0 | GMT+1 |
| Asia/Kolkata | GMT+5:30 | GMT+5:30 |
| Asia/Tokyo | GMT+9 | GMT+9 |
When it is 09:00 in New York
| Zone | Local time |
|---|---|
| America/Chicago | 08:00 |
| America/Denver | 07:00 |
| America/Phoenix | 06:00 |
| America/Los Angeles | 06:00 |
| America/Anchorage | 05:00 |
| Pacific/Honolulu | 03:00 |
| Europe/London | 13:00 |
| Asia/Kolkata | 18:30 |
| Asia/Tokyo | 22:00 |
Accuracy
How we checked this
We converted the same instant, 26 October 2026 at 12:00 UTC, into 10 time zones with this page's clock code and compared each result with the IANA time zone database on October 26, 2026. 10 of 10 matched.
| Zone | Independent value | This page | Match |
|---|---|---|---|
| America/New York | 08:00 | 08:00 | Yes |
| America/Chicago | 07:00 | 07:00 | Yes |
| America/Denver | 06:00 | 06:00 | Yes |
| America/Phoenix | 05:00 | 05:00 | Yes |
| America/Los Angeles | 05:00 | 05:00 | Yes |
| America/Anchorage | 04:00 | 04:00 | Yes |
| Pacific/Honolulu | 02:00 | 02:00 | Yes |
| Europe/London | 12:00 | 12:00 | Yes |
| Asia/Kolkata | 17:30 | 17:30 | Yes |
| Asia/Tokyo | 21:00 | 21:00 | Yes |
From the source
At present, daylight saving time in the United States begins at 2:00 a.m. on the second Sunday of March …
Sources
GOOD TO KNOW
Frequently asked questions
Does the converter handle daylight saving time?
Yes. It uses the IANA database built into your browser, so each zone’s DST dates are applied automatically.
What is UTC?
Coordinated Universal Time, the reference from which every time zone offset is measured. It does not observe daylight saving time.
How are time zones and daylight saving handled?
Conversions use the IANA time zone database built into your browser, so DST rules and UTC offsets are applied automatically — never hardcoded.
What does the World Clock show?
It lists the cities you add and updates their current local time every second. Search a city or time zone to add it, and remove a city when you no longer need it.
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