What is the time difference between Denver and Sydney?

Sydney is 16 hours ahead of Denver. 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 Denver?

Between 17:00–18:00 in Denver, which is 09:00–10:00 in Sydney. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Denver observe daylight saving time?

Yes. Denver runs on UTC-7 in winter and UTC-6 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 Denver, what time is it in Sydney?

It is 04:00 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 Denver and Sydney use?

Denver uses America/Denver, currently UTC-6 (MDT), 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 Denver time to Sydney time

Sydney is 16 hours ahead of Denver right now, so midday in Denver lands in the small hours in Sydney.

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 Denver, and what the clock reads in Sydney at that same moment.

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

Daylight saving time

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

Denver

Observes daylight saving time

Standard: UTC-7
Daylight: UTC-6
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

The window is 1 hour wide — 17:00–18:00 in Denver, 09:00–10:00 in Sydney.

Denver 17:00–18:00Sydney 09:00–10:00

Reference

The zone identifiers and offsets behind everything above.

	Denver	Sydney
IANA zone	America/Denver	Australia/Sydney
Abbreviation	MDT	AEST
Standard offset	UTC-7	UTC+10
Daylight offset	UTC-6	UTC+11
Clock changes this year	2	2
Country	United States	Australia

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

Common questions

What is the time difference between Denver and Sydney?: Sydney is 16 hours ahead of Denver. 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 Denver?: Between 17:00–18:00 in Denver, which is 09:00–10:00 in Sydney. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Denver observe daylight saving time?: Yes. Denver runs on UTC-7 in winter and UTC-6 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 Denver, what time is it in Sydney?: It is 04:00 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 Denver and Sydney use?: Denver uses America/Denver, currently UTC-6 (MDT), and Sydney uses Australia/Sydney, currently UTC+10 (AEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.