What is the time difference between Tokyo and Nuuk?

Nuuk is 10 hours behind Tokyo. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Nuuk from Tokyo?

There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.

Does Tokyo observe daylight saving time?

No. Tokyo stays on UTC+9 all year, so its clocks never move.

Does Nuuk observe daylight saving time?

Yes. Nuuk runs on UTC-2 in winter and UTC-1 in summer. The next change is on 2026-10-24, when clocks go back by 60 minutes.

If it is midday in Tokyo, what time is it in Nuuk?

It is 02:00 in Nuuk, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Tokyo and Nuuk use?

Tokyo uses Asia/Tokyo, currently UTC+9, and Nuuk uses America/Nuuk, currently UTC-1. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Tokyo time to Nuuk time

Right now Nuuk runs 10 hours behind Tokyo. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

—

The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

The whole day mapped across: read down the left for Tokyo, across for Nuuk.

Tokyo	Nuuk
00:00	14:00previous day
01:00	15:00previous day
02:00	16:00previous day
03:00	17:00previous day
04:00	18:00previous day
05:00	19:00previous day
06:00	20:00previous day
07:00	21:00previous day
08:00	22:00previous day
09:00	23:00previous day
10:00	00:00
11:00	01:00
12:00	02:00
13:00	03:00
14:00	04:00
15:00	05:00
16:00	06:00
17:00	07:00
18:00	08:00
19:00	09:00
20:00	10:00
21:00	11:00
22:00	12:00
23:00	13:00

Daylight saving time

Nuuk changes its clocks; Tokyo does not. The difference between them therefore shifts by an hour twice a year.

Tokyo

Does not observe daylight saving time

Standard: UTC+9

Nuuk

Observes daylight saving time

Standard: UTC-2
Daylight: UTC-1
Next change: 2026-10-24 −60m

When you can actually talk

A standard working day in Tokyo and one in Nuuk do not overlap at all. Any call between them is early for one side or late for the other.

Tokyo 09:00–18:00Nuuk 23:00–08:00
Tokyo 19:00–04:00Nuuk 09:00–18:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	Tokyo	Nuuk
IANA zone	Asia/Tokyo	America/Nuuk
Abbreviation	UTC+9	UTC-1
Standard offset	UTC+9	UTC-2
Daylight offset	—	UTC-1
Clock changes this year	0	2
Country	Japan	Greenland

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between Tokyo and Nuuk?: Nuuk is 10 hours behind Tokyo. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Nuuk from Tokyo?: There is no time inside normal working hours in both cities, so someone has to take the call outside them. The nearest workable windows are listed above — pick one and alternate who gets the awkward slot.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
Does Nuuk observe daylight saving time?: Yes. Nuuk runs on UTC-2 in winter and UTC-1 in summer. The next change is on 2026-10-24, when clocks go back by 60 minutes.
If it is midday in Tokyo, what time is it in Nuuk?: It is 02:00 in Nuuk, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Tokyo and Nuuk use?: Tokyo uses Asia/Tokyo, currently UTC+9, and Nuuk uses America/Nuuk, currently UTC-1. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.