Convert Reykjavík time to Tokyo time

Hour by hour

Every hour of a day in Reykjavík, and what the clock reads in Tokyo at that same moment.

Daylight saving time

Both cities keep one offset all year. Whatever difference holds today still holds in six months.

When you can actually talk

There is no hour where both cities are inside a 09:00–18:00 working day. Someone has to move — the nearest workable windows are below.

• Reykjavík 00:00–18:00Tokyo 09:00–03:00

Reference

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

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

Common questions

What is the time difference between Reykjavík and Tokyo?

Tokyo is 9 hours ahead of Reykjavík. 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 Tokyo from Reykjavík?

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 Reykjavík observe daylight saving time?

No. Reykjavík stays on UTC+0 all year, so its clocks never move.

Does Tokyo observe daylight saving time?

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

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

It is 21:00 in Tokyo, on the same calendar date. That holds for the current offsets; it does not change through the year, because neither city moves its clocks.

Which time zones do Reykjavík and Tokyo use?

Reykjavík uses Atlantic/Reykjavik, currently UTC+0 (GMT), and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.