What is the time difference between Bangkok and Tokyo?

Tokyo is 2 hours ahead of Bangkok. 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 Bangkok?

Between 09:00–16:00 in Bangkok, which is 11:00–18:00 in Tokyo. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Bangkok observe daylight saving time?

No. Bangkok stays on UTC+7 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 Bangkok, what time is it in Tokyo?

It is 14:00 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 Bangkok and Tokyo use?

Bangkok uses Asia/Bangkok, currently UTC+7, and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Bangkok time to Tokyo time

Tokyo is 2 hours ahead of Bangkok right now, so midday in Bangkok lands in the afternoon in Tokyo.

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 Bangkok, across for Tokyo.

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

Daylight saving time

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

Bangkok

Does not observe daylight saving time

Standard: UTC+7

Tokyo

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

The window is 7 hours wide — 09:00–16:00 in Bangkok, 11:00–18:00 in Tokyo.

Bangkok 09:00–16:00Tokyo 11:00–18:00

Reference

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

	Bangkok	Tokyo
IANA zone	Asia/Bangkok	Asia/Tokyo
Abbreviation	UTC+7	UTC+9
Standard offset	UTC+7	UTC+9
Daylight offset	—	—
Clock changes this year	0	0
Country	Thailand	Japan

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

Common questions

What is the time difference between Bangkok and Tokyo?: Tokyo is 2 hours ahead of Bangkok. 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 Bangkok?: Between 09:00–16:00 in Bangkok, which is 11:00–18:00 in Tokyo. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Bangkok observe daylight saving time?: No. Bangkok stays on UTC+7 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 Bangkok, what time is it in Tokyo?: It is 14:00 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 Bangkok and Tokyo use?: Bangkok uses Asia/Bangkok, currently UTC+7, and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.