What is the time difference between St John's and Tokyo?

Tokyo is 11 hours 30 minutes ahead of St John's. 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 St John's?

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 St John's observe daylight saving time?

Yes. St John's runs on UTC-3:30 in winter and UTC-2:30 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.

Does Tokyo observe daylight saving time?

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

If it is midday in St John's, what time is it in Tokyo?

It is 23:30 in Tokyo, 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 St John's and Tokyo use?

St John's uses America/St_Johns, currently UTC-2:30, and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert St John's time to Tokyo time

Right now Tokyo runs 11 hours 30 minutes ahead of St John's. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

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Date

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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

The whole day mapped across: read down the left for St John's, across for Tokyo.

St John's	Tokyo
00:00	11:30
01:00	12:30
02:00	13:30
03:00	14:30
04:00	15:30
05:00	16:30
06:00	17:30
07:00	18:30
08:00	19:30
09:00	20:30
10:00	21:30
11:00	22:30
12:00	23:30
13:00	00:30next day
14:00	01:30next day
15:00	02:30next day
16:00	03:30next day
17:00	04:30next day
18:00	05:30next day
19:00	06:30next day
20:00	07:30next day
21:00	08:30next day
22:00	09:30next day
23:00	10:30next day

Daylight saving time

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

St John's

Observes daylight saving time

Standard: UTC-3:30
Daylight: UTC-2:30
Next change: 2026-11-01 −60m

Tokyo

Does not observe daylight saving time

Standard: UTC+9

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.

St John's 21:30–06:30Tokyo 09:00–18:00
St John's 09:00–18:00Tokyo 20:30–05:30

Reference

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

	St John's	Tokyo
IANA zone	America/St_Johns	Asia/Tokyo
Abbreviation	UTC-2:30	UTC+9
Standard offset	UTC-3:30	UTC+9
Daylight offset	UTC-2:30	—
Clock changes this year	2	0
Country	Canada	Japan

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

Common questions

What is the time difference between St John's and Tokyo?: Tokyo is 11 hours 30 minutes ahead of St John's. 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 St John's?: 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 St John's observe daylight saving time?: Yes. St John's runs on UTC-3:30 in winter and UTC-2:30 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.
Does Tokyo observe daylight saving time?: No. Tokyo stays on UTC+9 all year, so its clocks never move.
If it is midday in St John's, what time is it in Tokyo?: It is 23:30 in Tokyo, 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 St John's and Tokyo use?: St John's uses America/St_Johns, currently UTC-2:30, and Tokyo uses Asia/Tokyo, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.