Time Zone Converters

At 04:37 on 21 June 2026, the sun rises over Nagoya Castle. By 19:09 it sets, giving the city 14 hours and 32 minutes of daylight, the longest stretch of the year. The clock reads Japan Standard Time the whole while. It always does. JST sits at UTC+9 and has not budged since 1952, when Japan scrapped the summer time experiment imposed under Allied occupation. Every seasonal shift in a Nagoya to London or Nagoya to New York time gap comes from the other city. London moves. Nagoya stays put.

Nagoya time to London

London runs 9 hours behind Nagoya in January. In July the gap shrinks to 8 hours. The change happens because the UK enters British Summer Time (UTC+1) while Nagoya holds at UTC+9.

A call from Nagoya to London lands best at 16:00 to 18:00 JST. That gives you 07:00 to 10:00 in the UK during winter, or 08:00 to 11:00 during summer. Avoid Nagoya lunch hours, 12:00 to 13:00.

Nagoya time to New York

New York sits 14 hours behind Nagoya in January and 13 hours behind in July. Eastern Standard Time (UTC-5) widens the gap; Eastern Daylight Time (UTC-4) narrows it.

The workable window is Nagoya 20:00 to 22:00, which hits New York at 06:00 to 09:00 EST or 07:00 to 10:00 EDT. Early birds in Nagoya can also catch the previous evening in New York: a 07:00 JST start reaches 17:00 EST the day before.

Nagoya time to Sydney

Sydney is 2 hours ahead of Nagoya in January and 1 hour ahead in July. The Australian summer clock (AEDT, UTC+11) creates the larger gap; winter (AEST, UTC+10) closes it. Full business day overlap works in both directions. Schedule anytime 09:00 to 17:00 in either city and you will find the other side awake.

Nagoya time to Los Angeles

Los Angeles trails Nagoya by 17 hours in January and 16 hours in July. Pacific Standard Time (UTC-8) in winter, Pacific Daylight Time (UTC-7) in summer. Overlap is tight. A Nagoya morning call at 09:00 reaches Los Angeles at 16:00 the previous day. A Los Angeles morning at 09:00 PST means a 02:00 JST call from Nagoya. Late afternoon in Nagoya (17:00) catches late evening in LA (00:00 PST). Plan carefully.

Nagoya time to Dubai

Dubai runs 5 hours behind Nagoya every day of the year. The UAE does not observe daylight saving time. A Nagoya afternoon window of 14:00 to 17:00 hits Dubai at 09:00 to 12:00, ideal for morning meetings.

Nagoya time to Singapore

Singapore sits 1 hour behind Nagoya, constant across all seasons. Full business day overlap. No scheduling friction.

Nagoya time to Mumbai

Mumbai is 3.5 hours behind Nagoya, year-round. India Standard Time (UTC+5:30) stays fixed. Nagoya morning (09:00) reaches Mumbai late the previous evening (05:30). Nagoya afternoon (14:00) catches Mumbai mid-morning (10:30). The half-hour offset means you double-check the math every time.

Nagoya time to Chicago

Chicago is 15 hours behind Nagoya in January and 14 hours behind in July. Central Standard Time (UTC-6) in winter, Central Daylight Time (UTC-5) in summer. A Nagoya evening call at 21:00 reaches Chicago at 06:00 CST or 07:00 CDT.

Nagoya time to Johannesburg

Johannesburg runs 7 hours behind Nagoya, constant. South Africa does not observe DST. Nagoya afternoon (16:00) lands at 09:00 in Johannesburg.

Nagoya time to São Paulo

São Paulo is 12 hours behind Nagoya. The gap holds steady because Brazil stopped observing DST. One side always works late or early. A Nagoya 09:00 start reaches São Paulo at 21:00 the previous day.

Nagoya time to Seoul and Shanghai

Seoul shares the same clock as Nagoya: UTC+9, no DST. Shanghai runs 1 hour behind, at UTC+8 year-round. Full business day overlap with both cities.

Why JST never shifts

Japan Standard Time is fixed to the 135°E meridian, which runs through Akashi in Hyōgo Prefecture. The National Institute of Information and Communications Technology (NICT) maintains the country’s atomic clocks and broadcasts JST via NTP servers and the JJY radio signal. The IANA zone for Nagoya is Asia/Tokyo. No separate Asia/Nagoya zone exists.

Japan observed summer time from 1948 to 1951 under Allied occupation. The Diet abolished it in 1952. Public opposition has blocked every revival attempt since, including proposals floated during the 2011 power shortages and ahead of the 2020 Tokyo Olympics. No bill is active in 2026.

Best calling strategy from Nagoya

Stack your calls in Nagoya’s late afternoon, 16:00 to 18:00. That window catches London and Paris mornings, and it is the last chance before Europe’s afternoon drift. For New York and Chicago, push to 20:00 to 22:00 JST. Sydney, Singapore, Seoul, and Shanghai work anytime during a standard business day.

Skip Nagoya’s 12:00 to 13:00 lunch peak. Restaurants in Sakae and Nagoya Station fill fast; the city’s miso katsu and hitsumabushi spots turn tables quickly but do not wait for latecomers.

Travellers arriving from Europe or North America land eastward. Get afternoon or evening flights into Chūbu Centrair International Airport. Stay awake until local bedtime. Morning sunlight the next day resets the clock faster than any app. Travellers from Sydney or Singapore barely feel a shift.

Nagoya time differences at a glance