What is the time difference between Tokyo and Oslo?

Tokyo (JST, UTC+9) is 8 hours ahead of Oslo in winter (CET, UTC+1) and 7 hours ahead in summer (CEST, UTC+2). Japan does not observe Daylight Saving Time, so the gap shifts only when Norway moves its clocks in spring and autumn.

Does Tokyo observe Daylight Saving Time?

No. Japan abolished DST in 1952 and has not used it since. Tokyo stays on JST (UTC+9) all year. Only Oslo shifts its clocks twice a year, which is why the Tokyo-Oslo gap alternates between 7 and 8 hours.

When does Norway switch between CET and CEST?

Norway moves clocks forward to CEST (UTC+2) on the last Sunday in March at 02:00 CET. At that point Tokyo goes from 8 hours ahead to 7 hours ahead. Clocks move back to CET (UTC+1) on the last Sunday in October at 03:00 CEST, returning the gap to 8 hours.

What are the best meeting times when calling from Tokyo to Oslo?

In winter (CET), Tokyo at 17:00–18:00 JST equals Oslo at 09:00–10:00 — early in the Norwegian workday. In summer (CEST), Tokyo at 17:00–18:00 JST equals Oslo at 10:00–11:00, giving a slightly better window.

Is this tool accurate for scheduling?

Yes. It uses the IANA timezone database embedded in your browser — the same source used by operating systems and calendar apps worldwide. Accuracy depends on your device clock being synchronized via NTP, which most devices handle automatically.

What is CET and CEST?

CET (Central European Time) is UTC+1 and is used by Norway in winter. CEST (Central European Summer Time) is UTC+2 and is active from late March to late October. Oslo switches between the two each year.

Time Difference: Tokyo to Oslo

Name: Time Difference: Tokyo to Oslo
Availability: InStock
Author: Nham Vu

See the current time in Tokyo and Oslo side by side, with the live UTC offset (JST is UTC+9 year-round; Oslo is CET in winter and CEST in summer), updated every second.

Tokyo, Japan

--:--:--

JST UTC+9

Oslo, Norway

--:--:--

CET UTC+1

Current Offset

+8 hours

Tokyo is 8 hours ahead of Oslo

Convert Tokyo Time to Oslo Time

Based on the current offset — updates automatically

Tokyo (JST)	Oslo (CET/CEST)

Meeting Overlap Finder

Business hours (09:00–18:00) highlighted — best overlap shaded

Tokyo (JST)	Oslo (CET/CEST)	Status

Summary

See the current time in Tokyo and Oslo side by side, with the live UTC offset (JST is UTC+9 year-round; Oslo is CET in winter and CEST in summer), updated every second.

How it works

Your browser reads the current moment from your device clock.
It converts that moment to Asia/Tokyo time (JST, UTC+9) using the IANA timezone database built into modern browsers.
The same moment is converted to Europe/Oslo time (CET or CEST depending on the season).
The UTC offsets of both cities are compared to calculate the exact hour difference.
All three values — Tokyo time, Oslo time, and the offset — refresh every second.
When Oslo switches between CET and CEST, the displayed offset adjusts automatically between +7 and +8 hours.

Use cases

Scheduling video calls between Tokyo and Oslo offices.
Checking if a colleague in Oslo is still at their desk.
Planning Japan-Norway travel and arrival time comparisons.
Remote teams running daily standups across Japan and Norway.
Finding the best overlap window for Tokyo-Oslo meetings.
Converting a Tokyo meeting time to its Oslo equivalent.
Investors in Tokyo tracking the Oslo Stock Exchange open.
Students and teachers arranging online lessons between Japan and Norway.

Frequently Asked Questions

Last updated: 2026-07-28 · Reviewed by Nham Vu