Austin, TX to Castle Hill: time difference
Castle Hill is 16 h ahead of Austin, TX. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇦🇺 Castle Hill, Australia
59
- Australian Eastern Daylight Time
- UTC+11
- Night
☀️ 06:12 · 🌙 19:11 · 12 h 59 min
+16 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Austin, TX 12:31 12:31 PM Castle Hill 04:31 4:31 AM You –:–
12:31 12:31 PM
Central Daylight Time · UTC-5
☀️ 07:35 · 🌙 18:59
04:31 4:31 AM
Australian Eastern Daylight Time · UTC+11
☀️ 06:12 · 🌙 19:11
·
+16 h
Castle Hill is 16 h ahead of Austin, TX.
When you, Austin, TX and Castle Hill are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Austin, TX
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇦🇺 Castle Hill
16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇸 Austin, TX | 🇦🇺 Castle Hill |
|---|---|---|
| Local time | 12:31 | 04:31 |
| Local date | Saturday, October 17, 2026 | Sunday, October 18, 2026 |
| Time zone | Central Daylight Time | Australian Eastern Daylight Time |
| UTC offset | UTC-5 | UTC+11 |
| Offset from Austin, TX | — | +16 h |
| IANA zone | America/Chicago | Australia/Sydney |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | On summer time → UTC+10, Apr 4, 02:00 |
| Sunrise | 07:35 | 06:12 |
| Sunset | 18:59 | 19:11 |
| Daylight | 11 h 24 min | 12 h 59 min |
| People on this clock | 974,447 | 39,284 |
Compare Austin, TX with another city
More comparisons with Austin, TX: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Austin, TX and Castle Hill: common questions
How many hours ahead of Austin, TX, is Castle Hill?
The clocks in Castle Hill are 16 hours ahead of those in Austin (UTC+11 and UTC−5).
What time is it in Castle Hill when it is 9:00 AM in Austin, TX?
When it is 9:00 AM in Austin, it is 1:00 AM (the next day) in Castle Hill.
What time is it in Castle Hill at the end of the working day in Austin, TX?
The working day in Austin ends at 6:00 PM; in Castle Hill it is 10:00 AM (the next day) at that moment.
Is there a time when both Austin, TX, and Castle Hill are at work?
Yes: from 5:00 PM to 6:00 PM in Austin (9:00 AM (the next day) to 10:00 AM (the next day) in Castle Hill), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Castle Hill compared with Austin, TX?
The new day starts in Castle Hill earlier: at 8:00 AM in Austin it is already midnight there. Until 4:00 PM in Castle Hill, Austin is still on the previous day.
Is the time difference between Austin, TX, and Castle Hill the same all year?
No. Both places use summer time, but they switch on different dates, so for a while the gap changes. From November 1, 2026, Castle Hill will be 17 hours ahead of Austin.
