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Time difference between Denver and Perth

Perth is 14 hours ahead of Denver

Denver, the United States is UTC−7 · Perth, Australia is UTC+8 — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Denver goes forward on the second Sunday in March and back on the first Sunday in November and Perth does not change its clocks.

Denver / Perth clocksDifferenceHow long
summer / standard14 hours aheadabout 34 weeks — most of the year
standard / standard15 hours aheadabout 18 weeks

Perth stays put all year while Denver moves, so a meeting fixed in Perth's calendar shifts by an hour twice a year at Denver's end.

When they can both be at their desks

Nine-to-five in Denver and nine-to-five in Perth do not overlap at all. With 14 hours between them, one side is always outside working hours, and the practical question is which side takes the early start or the late finish rather than when to meet.

Denver to Perth, hour by hour

DenverPerth
12:00 AM2:00 PM
1:00 AM3:00 PM
2:00 AM4:00 PM
3:00 AM5:00 PM
4:00 AM6:00 PM
5:00 AM7:00 PM
6:00 AM8:00 PM
7:00 AM9:00 PM
8:00 AM10:00 PM
9:00 AM11:00 PM
10:00 AM12:00 AM (next day)
11:00 AM1:00 AM (next day)
12:00 PM2:00 AM (next day)
1:00 PM3:00 AM (next day)
2:00 PM4:00 AM (next day)
3:00 PM5:00 AM (next day)
4:00 PM6:00 AM (next day)
5:00 PM7:00 AM (next day)
6:00 PM8:00 AM (next day)
7:00 PM9:00 AM (next day)
8:00 PM10:00 AM (next day)
9:00 PM11:00 AM (next day)
10:00 PM12:00 PM (next day)
11:00 PM1:00 PM (next day)

On the usual gap of 14 hours.

Frequently asked questions

What is the time difference between Denver and Perth?

Perth is 14 hours ahead of Denver for most of the year. It is not the same all year — there is one other gap, because Denver goes forward on the second Sunday in March and back on the first Sunday in November and Perth does not change its clocks.

Is Perth ahead of Denver?

Yes — Perth is 14 hours ahead. Denver is UTC−7 and Perth is UTC+8 on standard time.

What time is 9 AM in Denver in Perth?

11:00 PM, on the usual gap.

When can Denver and Perth meet?

Nine-to-five in Denver and nine-to-five in Perth do not overlap at all. One side has to take the call outside working hours, and with 14 hours between them it is worth deciding in advance which side that is.

Other pairs

Every Denver pair · Every Perth pair · All city pairs · Time zones by abbreviation