New Castle to Sydney time converter

Sydney is 15 hours ahead of New Castle. When it is 9:00 AM in New Castle, it is 12:00 AM (Tue, Oct 20) in Sydney.

New Castle EDT

Monday, October 19, 2026

Sydney AEDT

Monday, October 19, 2026

New Castle
Pennsylvania, United States
Mon, Oct 19
EDTUTC-4
Sydney
New South Wales, Australia
Mon, Oct 19
AEDTUTC+11+15h
Finding your time zone…
Shared working hours (9:00–18:00)

New Castle to Sydney conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in New Castle (7:00 AM – 9:00 AM in Sydney): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 19, 2026 – Nov 1, 2026: +15h
  • Nov 1, 2026 – Mar 14, 2027: +16h
  • Mar 14, 2027 – Apr 3, 2027: +15h
  • Apr 3, 2027 – Oct 2, 2027: +14h
  • Oct 2, 2027 – Oct 19, 2027: +15h

Distance

New Castle and Sydney are 15,461 km (9,607 miles) apart in a straight line.

More conversions

Sydney to New CastleNew Castle to New YorkNew Castle to LondonNew Castle to Los AngelesNew Castle to ChicagoNew Castle to TorontoNew Castle to São PauloNew Castle to ParisNew Castle to BerlinNew Castle to MoscowNew Castle to DubaiNew Castle to New DelhiNew Castle to Bangkok
New York to SydneyLondon to SydneyLos Angeles to SydneyChicago to SydneyToronto to SydneySão Paulo to SydneyParis to SydneyBerlin to SydneyMoscow to SydneyDubai to SydneyNew Delhi to SydneyBangkok to Sydney

Questions and answers

What is the time difference between New Castle and Sydney?

Sydney is 15 hours ahead of New Castle.

What time is it in Sydney when it is 9 AM in New Castle?

When it is 9:00 AM in New Castle, it is 12:00 AM (Tue, Oct 20) in Sydney.

When is the best time to call Sydney from New Castle?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in New Castle (7:00 AM – 9:00 AM in Sydney): working hours on one side, early or late on the other.

Does the time difference between New Castle and Sydney change?

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