What does Asia/Tokyo cover?

Every address in Japan sits inside Asia/Tokyo. Yokohama, Tokyo, Osaka, Nagoya, Sapporo, Fukuoka: one zone, no exceptions. No separate "Asia/Yokohama" exists in the IANA database. The country unified around the 135°E meridian in 1888 and never subdivided its time since.

Why does Yokohama stay on UTC+9 all year?

Japan Standard Time does not shift. The offset is UTC+9 in January, in July, on a public holiday, on a workday. The country abandoned daylight saving in 1951 after a brief occupation-era trial from 1948 to 1951. Farmers hated darker mornings, families hated disrupted routines, and the Diet scrapped it permanently.

No spring forward. No fall back. The clock never moves.

That means the gap between Yokohama and a DST-observing city widens or shrinks twice a year while Yokohama stays put.

What is the time difference between Yokohama and New York?

On 15 January 2026, New York runs 14 hours behind Yokohama. By 15 July 2026, the gap narrows to 13 hours. The shift happens because New York springs forward and falls back; Yokohama does neither.

What is the time difference between Yokohama and London?

London sits 9 hours behind Yokohama in January. In July, British Summer Time cuts the gap to 8 hours. Same pattern: the UK moves its clocks, Japan does not.

What is the time difference between Yokohama and Los Angeles?

Los Angeles trails by 17 hours in January and 16 hours in July.

What is the time difference between Yokohama and Sydney?

Sydney runs 2 hours ahead of Yokohama in January. By July, after Australia's autumn clock change, the lead shrinks to 1 hour.

What is the time difference between Yokohama and Mumbai?

Mumbai stays 3.5 hours behind Yokohama all year. India does not observe DST, so the offset never changes.

What is the time difference between Yokohama and Dubai?

Dubai is 5 hours behind Yokohama in January and July. No DST in the UAE.

What is the time difference between Yokohama and Singapore?

Singapore runs 1 hour behind Yokohama. That gap holds steady across both dates.

What is the time difference between Yokohama and Paris?

Paris is 8 hours behind in January, 7 hours behind in July.

What is the time difference between Yokohama and Johannesburg?

Johannesburg stays 7 hours behind. South Africa does not observe DST.

What is the time difference between Yokohama and São Paulo?

São Paulo is 12 hours behind Yokohama on both dates.

What is the time difference between Yokohama and Chicago?

Chicago trails by 15 hours in January and 14 hours in July.

When is the best time to call Yokohama from the US?

East Coast mornings are Yokohama evenings. Aim for 20:00 to 22:00 JST, which lands at 07:00 to 09:00 in New York during summer or 06:00 to 08:00 in winter. West Coast calls work in reverse: Yokohama 08:00 to 10:00 hits the previous afternoon in Los Angeles.

When is the best time to call Yokohama from the UK?

Yokohama afternoons overlap with British mornings. Try 16:00 to 18:00 JST, which is 08:00 to 10:00 BST or 07:00 to 09:00 GMT.

When is the best time to call Yokohama from Australia?

Easy. 09:00 to 12:00 in Yokohama gives you 10:00 to 13:00 AEST or 11:00 to 14:00 AEDT in Sydney.

When is the best time to call Yokohama from India?

Morning works for both sides. 11:30 to 14:00 JST catches Mumbai at 08:00 to 10:30 IST.

What time does the sun rise in Yokohama in December?

On the December solstice, 21 December 2026, sunrise hits at 06:46 and sunset at 16:32. Total daylight: 9 hours 46 minutes. The shortest day of the year.

What time does the sun set in Yokohama in June?

On the June solstice, 21 June 2026, the sun rises at 04:26 and sets at 18:59. That is 14 hours 33 minutes of daylight. Long, bright evenings with no clock change needed.

How long is the day in Yokohama on the equinoxes?

The March equinox on 20 March 2026 delivers sunrise at 05:46 and sunset at 17:52, for 12 hours6 minutes of daylight. The September equinox on22 September 2026 brings sunrise at 05:28 and sunset at 17:40:12 hours12 minutes.

Does Japan have daylight saving time?

No. Japan ran a summer time experiment from 1948 to 1951 under Allied occupation. It was deeply unpopular. Farmers, educators, and the general public pushed back hard, and the Diet abolished it. Subsequent debates in the 1970s and 2000s went nowhere. No legislation is active.

What are Japan's national holidays in 2026?

Japan observes16 national holidays in2026. The list:

  • New Year's Day: Thursday1 January
  • Coming of Age Day: Monday12 January
  • Foundation Day: Wednesday11 February
  • Emperor's Birthday: Monday23 February
  • Vernal Equinox Day: Friday20 March
  • Showa Day: Wednesday29 April
  • Constitution Day: Sunday3 May
  • Greenery Day: Monday4 May
  • Children's Day: Tuesday5 May
  • Substitute Holiday: Wednesday6 May
  • Marine Day: Monday20 July
  • Mountain Day: Tuesday11 August
  • Respect for the Aged Day: Monday21 September
  • National Holiday: Tuesday22 September
  • Autumnal Equinox Day: Wednesday23 September
  • Sports Day: Monday12 October
  • Culture Day: Tuesday3 November
  • Labor Thanksgiving Day: Monday23 November

Banks, government offices, and some businesses close. Retail usually stays open. Public transport shifts to a Sunday or holiday timetable.

What is the IANA time zone for Yokohama?

Asia/Tokyo. There is no other option. The identifier covers every city, town, and village in Japan.

Is Yokohama in the same time zone as Tokyo?

Yes. Yokohama sits at roughly139.65°E, Tokyo at139.76°E. Solar noon differs by less than30 seconds. Both cities use JST, UTC+9, under the Asia/Tokyo IANA zone.

Is Japan9 hours ahead of the UK?

Yes and no. Against GMT, JST is9 hours ahead. But the UK observes BST in summer, so the gap shrinks to8 hours from late March to late October. The offset against UTC is always9 hours.

What time do banks open in Yokohama?

Counter service typically runs09:00 to15:00 on weekdays. ATMs operate wider hours, often07:00 to21:00 on weekdays with shorter weekend windows. Convenience-store ATMs run24/7.

What time do shops open in Yokohama?

Department stores and malls in Minato Mirai generally open10:00 and close20:00 or21:00. Supermarkets run09:00 to22:00 or10:00 to21:00. Convenience stores are24/7. Restaurants serve lunch11:30 to14:00 and dinner17:30 to22:00, with last orders often by21:00 or21:30.

What time do trains stop running in Yokohama?

JR East, the municipal subway, and the Minatomirai Line all run first trains around05:00. Last trains depart between00:00 and00:30. No24-hour public transport. Late-night taxis fill the gap.

What time is the Tokyo Stock Exchange open?

The TSE operates09:00 to11:30 and12:30 to15:00 JST. That session overlaps with Hong Kong, Singapore, and Shanghai but never with New York or London regular hours.

Asia/Tokyo vs other Japanese identifiers

Identifier What it means
Asia/Tokyo IANA database identifier for all of Japan
JST Abbreviation for Japan Standard Time
UTC+9 The offset from Coordinated Universal Time
日本標準時 (Nihon Hyōjunji) Japanese name for JST

No "Asia/Yokohama" or "Asia/Osaka" exists. Asia/Tokyo is the sole entry.

How bad is jet lag from New York to Yokohama?

Severe. You lose14 to17 hours flying eastbound. Arrive in the afternoon or evening. The best counter: get morning light immediately, stay awake until local bedtime, skip the nap.

How bad is jet lag from London to Yokohama?

Moderate. You lose7 to9 hours. Easier to adjust than a trans-Pacific crossing.

Yokohama time zone checklist

  • IANA zone: Asia/Tokyo
  • Standard time: JST (Japan Standard Time)
  • Offset: UTC+9
  • DST: None observed since1951
  • Covers: All of Japan, including Yokohama
  • Clock changes: None. The offset never moves.

For more detail on specific topics, see: - Daylight Saving Time in Yokohama 2026 - Yokohama Time Zone: JST, UTC+9 & Asia/Tokyo Explained - Time in Japan Now