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

Sydney is 12 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 Sydney 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 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.

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

It is 00:30 in Sydney, and already the following day. 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 Sydney use?

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

Convert St John's time to Sydney time

Right now Sydney runs 12 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

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

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

Daylight saving time

St John's and Sydney both observe daylight saving. Where their change dates differ, so does the gap between them for the weeks in between.

St John's

Observes daylight saving time

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

Sydney

Observes daylight saving time

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

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

Reference

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

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

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

Common questions

What is the time difference between St John's and Sydney?: Sydney is 12 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 Sydney 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 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.
If it is midday in St John's, what time is it in Sydney?: It is 00:30 in Sydney, and already the following day. 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 Sydney use?: St John's uses America/St_Johns, currently UTC-2:30, and Sydney uses Australia/Sydney, currently UTC+10 (AEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.