What is the time difference between Tokyo and Riyadh?

Riyadh is 6 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 Riyadh from Tokyo?

Between 15:00–18:00 in Tokyo, which is 09:00–12:00 in Riyadh. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Tokyo observe daylight saving time?

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

Does Riyadh observe daylight saving time?

No. Riyadh stays on UTC+3 all year, so its clocks never move.

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

It is 06:00 in Riyadh, 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 Tokyo and Riyadh use?

Tokyo uses Asia/Tokyo, currently UTC+9, and Riyadh uses Asia/Riyadh, currently UTC+3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Tokyo time to Riyadh time

Right now Riyadh runs 6 hours behind Tokyo. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

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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

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

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

Daylight saving time

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

Tokyo

Does not observe daylight saving time

Standard: UTC+9

Riyadh

Does not observe daylight saving time

Standard: UTC+3

When you can actually talk

The window is 3 hours wide — 15:00–18:00 in Tokyo, 09:00–12:00 in Riyadh.

Tokyo 15:00–18:00Riyadh 09:00–12:00

Reference

The zone identifiers and offsets behind everything above.

	Tokyo	Riyadh
IANA zone	Asia/Tokyo	Asia/Riyadh
Abbreviation	UTC+9	UTC+3
Standard offset	UTC+9	UTC+3
Daylight offset	—	—
Clock changes this year	0	0
Country	Japan	Saudi Arabia

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

Common questions

What is the time difference between Tokyo and Riyadh?: Riyadh is 6 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 Riyadh from Tokyo?: Between 15:00–18:00 in Tokyo, which is 09:00–12:00 in Riyadh. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
Does Riyadh observe daylight saving time?: No. Riyadh stays on UTC+3 all year, so its clocks never move.
If it is midday in Tokyo, what time is it in Riyadh?: It is 06:00 in Riyadh, 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 Tokyo and Riyadh use?: Tokyo uses Asia/Tokyo, currently UTC+9, and Riyadh uses Asia/Riyadh, currently UTC+3. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.