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

St John's is 12 hours 30 minutes behind Sydney. 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 St John's from Sydney?

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 Sydney observe daylight saving time?

Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.

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.

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

It is 23:30 in St John's, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do Sydney and St John's use?

Sydney uses Australia/Sydney, currently UTC+10 (AEST), and St John's uses America/St_Johns, currently UTC-2:30. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Sydney time to St John's time

Right now St John's runs 12 hours 30 minutes behind Sydney. 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

Every hour of a day in Sydney, and what the clock reads in St John's at that same moment.

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

Daylight saving time

Both cities change their clocks, but not necessarily on the same date — which is why the difference between them shifts for a few weeks each year.

Sydney

Observes daylight saving time

Standard: UTC+10
Daylight: UTC+11
Next change: 2026-10-04 +60m

St John's

Observes daylight saving time

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

When you can actually talk

A standard working day in Sydney and one in St John's do not overlap at all. Any call between them is early for one side or late for the other.

Sydney 10:00–18:00St John's 21:30–05:30
Sydney 21:30–06:30St John's 09:00–18:00

Reference

The zone identifiers and offsets behind everything above.

	Sydney	St John's
IANA zone	Australia/Sydney	America/St_Johns
Abbreviation	AEST	UTC-2:30
Standard offset	UTC+10	UTC-3:30
Daylight offset	UTC+11	UTC-2:30
Clock changes this year	2	2
Country	Australia	Canada

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

Common questions

What is the time difference between Sydney and St John's?: St John's is 12 hours 30 minutes behind Sydney. 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 St John's from Sydney?: 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 Sydney observe daylight saving time?: Yes. Sydney runs on UTC+10 in winter and UTC+11 in summer. The next change is on 2026-10-04, when clocks go forward by 60 minutes.
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.
If it is midday in Sydney, what time is it in St John's?: It is 23:30 in St John's, still on the previous day. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do Sydney and St John's use?: Sydney uses Australia/Sydney, currently UTC+10 (AEST), and St John's uses America/St_Johns, currently UTC-2:30. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.