Time ZonesAbout this time zone
All of Japan keeps one time. Computers and phones know it by the zone name Asia/Tokyo. Its time is UTC+9, which means it is 9 hours ahead of Coordinated Universal Time (UTC) all year round. The short name used for this time is JST. Compared with India (IST), it is 3 hours 30 minutes ahead of India.
Clock changes in 2026 and 2027
Japan does not change its clocks in 2026 or 2027. The time stays at UTC+9 all year, so there is no daylight saving time to remember.
Time difference with major cities
| When it is 12:00 noon in Japan, it is | In January 2026 | In July 2026 |
|---|---|---|
| India | 8:30 am3 hours 30 minutes behind | 8:30 am3 hours 30 minutes behind |
| United Kingdom | 3:00 am9 hours behind | 4:00 am8 hours behind |
| France | 4:00 am8 hours behind | 5:00 am7 hours behind |
| New York, United States | 10:00 pm previous day14 hours behind | 11:00 pm previous day13 hours behind |
| Chicago, United States | 9:00 pm previous day15 hours behind | 10:00 pm previous day14 hours behind |
| Los Angeles, United States | 7:00 pm previous day17 hours behind | 8:00 pm previous day16 hours behind |
| United Arab Emirates | 7:00 am5 hours behind | 7:00 am5 hours behind |
| Singapore | 11:00 am1 hour behind | 11:00 am1 hour behind |
| Sydney, Australia | 2:00 pm2 hours ahead | 1:00 pm1 hour ahead |
The table uses the offsets in force in mid January and mid July 2026. Use the converter for any other date.
Clock time and sun time in Japan
A time zone is an agreement, and the sun does not follow it exactly. Tokyo, the largest city in this zone, lies at about 139.7° east. Each degree of longitude is worth four minutes, so by the sun alone its time would be about 9 hours 19 minutes ahead of UTC. The clock is set to UTC+9. The sun is therefore highest in the sky at about 11:41 am by the clock, not at 12:00. The clock runs a little behind the sun here, so mornings are light early and evenings darken sooner. Other places in the zone, to the east or west of Tokyo, see the sun peak a little earlier or later. Through the year the figure also drifts by up to a quarter of an hour either way.
How long the day is
Tokyo is about 35.7° north of the equator. On the longest day of the year, around 21 June, the sun is up for about 14 hours 35 minutes. On the shortest, around 21 December, for about 9 hours 44 minutes. That is a swing of about 4 hours 50 minutes between summer and winter, yet the clocks here stay the same all year.
Office hours shared with other places
If both sides work from 9 am to 6 pm, these are the hours when a call falls inside the working day at both ends. Times are for Japan.
- With India, all year: 12:30 pm to 6:00 pm here, which is 9:00 am to 2:30 pm in India (5 hours 30 minutes shared).
- With London, in January: no shared office hour: 9:00 am here is 12:00 am in London, and 6:00 pm here is 9:00 am there, so one side has to start early or stay late. In July: 5:00 pm to 6:00 pm here, which is 9:00 am to 10:00 am in London (1 hour shared).
- With New York, in January: no shared office hour: 9:00 am here is 7:00 pm in New York, and 6:00 pm here is 4:00 am there, so one side has to start early or stay late. In July: no shared office hour: 9:00 am here is 8:00 pm in New York, and 6:00 pm here is 5:00 am there, so one side has to start early or stay late.
How many people keep this time
The GeoNames list has 1,217 towns and cities of 15,000 people or more in this zone area, with about 132 million people between them. People in villages and smaller towns are not in that count, so the true number on this clock is higher.
Cities that keep this time
The largest cities in this zone: Tokyo, Yokohama, Osaka, Nagoya, Sapporo, Fukuoka, Kawasaki, Kobe, Kyoto, Saitama, Hiroshima, Sendai, Chiba, Kitakyushu.
Places with exactly the same time
These zones show the same time as Japan through the whole year: Chita, Russia, Dili, Timor Leste, Jayapura, Indonesia, Pyongyang, North Korea, Seoul, South Korea, Yakutsk, Russia.
The clock above uses your device's clock and the time zone rules built into your browser. Rules on this page: IANA time zone database 2026f. See About and data sources.