America/Whitehorse is an IANA time zone used in Canada. It stays on UTC−7 all year.
America/Whitehorse at a glance
How America/Whitehorse keeps time
No clock changes are scheduled in America/Whitehorse. The last one for daylight saving time was in 2020; since then the offset has been UTC−7 all year.
Recent and upcoming changes in America/Whitehorse
| Date | Change | New offset |
|---|---|---|
| Sunday, March 10, 2019 | Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM | UTC−7 |
| Sunday, November 3, 2019 | Clocks go back 1 hour: 2:00 AM becomes 1:00 AM | UTC−8 |
| Sunday, March 8, 2020 | Clocks go forward 1 hour: 2:00 AM becomes 3:00 AM | UTC−7 |
| Sunday, November 1, 2020 | Daylight saving time ends for good: clocks stay at UTC−7 (MST) | UTC−7 |
The base offset of this zone changed in 2020, from UTC−8 to UTC−7. Old timestamps should be converted with the rule that applied at the time.
Countries and cities on America/Whitehorse
America/Whitehorse is used in Canada. None of the cities in our list follow it.
America/Whitehorse compared with other time zones
Differences change during the year when one side moves to or from daylight saving time, so the table shows January and July separately.
| City | Time now | Difference now | In January | In July |
|---|---|---|---|---|
| New York (United States) | --:-- | 2 h ahead | 2 h ahead | 3 h ahead |
| Los Angeles (United States) | --:-- | 1 h behind | 1 h behind | Same time |
| London (United Kingdom) | --:-- | 7 h ahead | 7 h ahead | 8 h ahead |
| Paris (France) | --:-- | 8 h ahead | 8 h ahead | 9 h ahead |
| Dubai (United Arab Emirates) | --:-- | 11 h ahead | 11 h ahead | 11 h ahead |
| Mumbai (India) | --:-- | 12 h 30 min ahead | 12 h 30 min ahead | 12 h 30 min ahead |
| Singapore | --:-- | 15 h ahead | 15 h ahead | 15 h ahead |
| Tokyo (Japan) | --:-- | 16 h ahead | 16 h ahead | 16 h ahead |
| Sydney (Australia) | --:-- | 18 h ahead | 18 h ahead | 17 h ahead |
| UTC | --:-- | 7 h ahead | 7 h ahead | 7 h ahead |
Other zones on UTC−7 right now
These IANA zones show the same time as America/Whitehorse today. Their clock-change rules may differ.
- America/Boise
- America/Ciudad_Juarez
- America/Denver
- America/Hermosillo
- America/Mazatlan
- America/Phoenix
- America/Vancouver
- America/Cambridge_Bay
- America/Dawson_Creek
- America/Fort_Nelson
- America/Dawson
Using America/Whitehorse in software
Use the zone name America/Whitehorse rather than an abbreviation or a fixed offset. Abbreviations can mean several zones, and offsets ignore future clock changes.
Show the current time in America/Whitehorse:
// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'America/Whitehorse', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('America/Whitehorse'))
// PHP
(new DateTime('now', new DateTimeZone('America/Whitehorse')))->format('c');
# Shell
TZ=America/Whitehorse datePlan around the time in America/Whitehorse
- Convert a time to or from America/Whitehorse: pick a date and time and see it in every city on your list.
- Add America/Whitehorse to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in America/Whitehorse and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What is the UTC offset of America/Whitehorse?
UTC−7, all year.
What abbreviation does America/Whitehorse use?
MST. Abbreviations are not unique, so use the zone name America/Whitehorse in software.
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.