Sydney to Great Falls time converter

Great Falls is 17 hours behind Sydney. When it is 9:00 AM in Sydney, it is 4:00 PM (Sun, Oct 18) in Great Falls.

Sydney AEDT

Monday, October 19, 2026

Great Falls MDT

Sunday, October 18, 2026

Sydney
New South Wales, Australia
Mon, Oct 19
AEDTUTC+11
Great Falls
Montana, United States
Sun, Oct 18
MDTUTC-6-17h
Finding your time zone…
Shared working hours (9:00–18:00)

Sydney to Great Falls conversion table

Every hour of today in Sydney and the matching time in Great Falls. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 9:00 AM – 11:00 AM in Sydney (4:00 PM – 6:00 PM in Great Falls).

Daylight saving time and the difference

The difference changes during the year because Sydney and Great Falls switch clocks on different dates:

  • Oct 19, 2026 – Nov 1, 2026: -17h
  • Nov 1, 2026 – Mar 14, 2027: -18h
  • Mar 14, 2027 – Apr 4, 2027: -17h
  • Apr 4, 2027 – Oct 3, 2027: -16h
  • Oct 3, 2027 – Oct 19, 2027: -17h

Distance

Sydney and Great Falls are 13,226 km (8,218 miles) apart in a straight line.

More conversions

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New York to Great FallsLondon to Great FallsLos Angeles to Great FallsChicago to Great FallsToronto to Great FallsSão Paulo to Great FallsParis to Great FallsBerlin to Great FallsMoscow to Great FallsDubai to Great FallsNew Delhi to Great FallsBangkok to Great Falls

Questions and answers

What is the time difference between Sydney and Great Falls?

Great Falls is 17 hours behind Sydney.

What time is it in Great Falls when it is 9 AM in Sydney?

When it is 9:00 AM in Sydney, it is 4:00 PM (Sun, Oct 18) in Great Falls.

When is the best time to call Great Falls from Sydney?

Both sides are at work from 9:00 AM – 11:00 AM in Sydney (4:00 PM – 6:00 PM in Great Falls).

Does the time difference between Sydney and Great Falls change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.