Asia/Tokyo is an IANA time zone used in Japan. It stays on UTC+9 all year.
Asia/Tokyo at a glance
How Asia/Tokyo keeps time
Asia/Tokyo stays on UTC+9 all year. The tz database records no daylight saving time in this zone since 1970.
Countries and cities on Asia/Tokyo
Asia/Tokyo is used in Japan. These are the largest cities in our list that follow it.
Asia/Tokyo 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) | --:-- | 14 h behind | 14 h behind | 13 h behind |
| Los Angeles (United States) | --:-- | 17 h behind | 17 h behind | 16 h behind |
| London (United Kingdom) | --:-- | 9 h behind | 9 h behind | 8 h behind |
| Paris (France) | --:-- | 8 h behind | 8 h behind | 7 h behind |
| Dubai (United Arab Emirates) | --:-- | 5 h behind | 5 h behind | 5 h behind |
| Mumbai (India) | --:-- | 3 h 30 min behind | 3 h 30 min behind | 3 h 30 min behind |
| Singapore | --:-- | 1 h behind | 1 h behind | 1 h behind |
| Sydney (Australia) | --:-- | 2 h ahead | 2 h ahead | 1 h ahead |
| UTC | --:-- | 9 h behind | 9 h behind | 9 h behind |
Other zones on UTC+9 right now
These IANA zones show the same time as Asia/Tokyo today. Their clock-change rules may differ.
Using Asia/Tokyo in software
Use the zone name Asia/Tokyo rather than an abbreviation or a fixed offset. Abbreviations can mean several zones, and offsets ignore future clock changes.
Show the current time in Asia/Tokyo:
// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'Asia/Tokyo', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('Asia/Tokyo'))
// PHP
(new DateTime('now', new DateTimeZone('Asia/Tokyo')))->format('c');
# Shell
TZ=Asia/Tokyo datePlan around the time in Asia/Tokyo
- Convert a time to or from Asia/Tokyo: pick a date and time and see it in every city on your list.
- Add Tokyo to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Asia/Tokyo 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 Asia/Tokyo?
UTC+9, all year.
What abbreviation does Asia/Tokyo use?
JST. Abbreviations are not unique, so use the zone name Asia/Tokyo 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.