Sydney to Helena time converter

Helena is 16 hours behind Sydney. When it is 9:00 AM in Sydney, it is 5:00 PM (Tue, Oct 20) in Helena.

Sydney AEDT

Wednesday, October 21, 2026

Helena CDT

Wednesday, October 21, 2026

Sydney
New South Wales, Australia
Wed, Oct 21
AEDTUTC+11
Helena
Alabama, United States
Wed, Oct 21
CDTUTC-5-16h
Finding your time zone…
Shared working hours (9:00–18:00)

Sydney to Helena conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 10:00 AM in Sydney (5:00 PM – 6:00 PM in Helena).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: -16h
  • Nov 1, 2026 – Mar 14, 2027: -17h
  • Mar 14, 2027 – Apr 4, 2027: -16h
  • Apr 4, 2027 – Oct 3, 2027: -15h
  • Oct 3, 2027 – Oct 21, 2027: -16h

Distance

Sydney and Helena are 14,713 km (9,142 miles) apart in a straight line.

More conversions

Helena to SydneySydney to New YorkSydney to LondonSydney to Los AngelesSydney to ChicagoSydney to TorontoSydney to São PauloSydney to ParisSydney to BerlinSydney to MoscowSydney to DubaiSydney to New DelhiSydney to Bangkok
New York to HelenaLondon to HelenaLos Angeles to HelenaChicago to HelenaToronto to HelenaSão Paulo to HelenaParis to HelenaBerlin to HelenaMoscow to HelenaDubai to HelenaNew Delhi to HelenaBangkok to Helena

Questions and answers

What is the time difference between Sydney and Helena?

Helena is 16 hours behind Sydney.

What time is it in Helena when it is 9 AM in Sydney?

When it is 9:00 AM in Sydney, it is 5:00 PM (Tue, Oct 20) in Helena.

When is the best time to call Helena from Sydney?

Both sides are at work from 9:00 AM – 10:00 AM in Sydney (5:00 PM – 6:00 PM in Helena).

Does the time difference between Sydney and Helena change?

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