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Aichi, Japan

Aichi uses Japan Standard Time, UTC+09:00, throughout the year. Japan does not observe daylight saving time. Nagoya, Toyota, Okazaki, Ichinomiya and every other municipality in the prefecture therefore share the same stable clock setting.

Nagoya, Japan

Saturday, 5 September 2026

UTC+9 · Asia/Tokyo

Time and sun data for Nagoya — the largest city of Aichi

The sun in Nagoya

Sunrise 5:29 AM Solar noon 11:53 AM Sunset 6:17 PM Daylight 12 h 48 min Night 11 h 12 min Civil twilight 5:03 AM – 6:42 PM

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Current time in Aichi, Japan

To calculate Aichi time from Coordinated Universal Time, add nine hours. The conversion frequently moves the result into the following calendar day, especially when it is afternoon or evening in UTC. That date change matters for reservations, deadlines and remote meetings.

Aichi follows the same time as Tokyo and the rest of Japan. Domestic travel into or out of the prefecture never requires a time-zone adjustment. Devices should be set to Japan Standard Time rather than to another UTC+09:00 region whose administrative rules could differ. Nagoya can debate the best local meal; the prefecture has already settled the clock.

Major cities on one prefectural clock

Nagoya is Aichi’s prefectural capital and its principal urban centre. Toyota, Okazaki and Ichinomiya are also major cities. Toyohashi is an important city in eastern Aichi. Each uses JST, so railway, business and event times can be compared directly.

Nagoya: the prefectural capital and central transport reference. Toyota: a major city inland from the prefecture’s central coast. Okazaki: a large urban centre southeast of Nagoya. Ichinomiya: a significant city northwest of Nagoya.

Toyohashi: a principal city in eastern Aichi. The size of a city does not affect its clock. Selecting a particular city is mainly important for sunrise, sunset, weather and travel estimates rather than for current civil time.

Sunrise around Aichi

Sunrise varies by date and exact coordinates. Eastern Toyohashi and western parts of Aichi can receive slightly different calculated solar times, even though their clocks agree. Seasonal movement of dawn and dusk should be handled with a dated local calculation.

Terrain and buildings influence when the Sun becomes visible to an observer. A dense urban skyline in Nagoya can hide the horizon, while hills can delay direct light in inland locations. The published sunrise remains the standard astronomical event for the chosen coordinates.

Morning railway departures use JST, not sunrise. Anyone planning photography, hiking or outdoor work should consult civil twilight as well, since useful ambient light begins before the solar disc appears.

Select the nearest Aichi city. Choose the exact date in Japan’s calendar. Confirm that the result is labelled JST or UTC+09:00. Allow for the skyline, terrain and weather at the viewing point.

Questions and answers

Is Aichi in the same time zone as Tokyo?
Yes. Both use Japan Standard Time, UTC+09:00.
Does Aichi change clocks during summer?
No. Japan does not currently observe daylight saving time.
Is sunrise simultaneous in Nagoya and Toyohashi?
Not precisely. Their coordinates differ, so solar times can differ slightly while the civil clock remains the same.
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