Sydney to Castro Valley Time Difference
Castro Valley is 17 hours behind Sydney
24-Hour Comparison
Business hours Extended Off hours
Sydney
11p
12a
01a
02a
03a
04a
05a
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
04p
05p
06p
07p
08p
09p
10p
Castro Valley
06a
07a
08a
09a
10a
11a
12p
01p
02p
03p
04p
05p
06p
07p
08p
09p
10p
11p
12a
01a
02a
03a
04a
05a
Each column is the same moment in both cities, starting from right now and rolling forward 24 hours — daylight saving is already accounted for.
Best Time to Call
On a typical weekday (Monday–Friday).
- 09:00 AM – 10:00 AM in Sydney04:00 PM – 05:00 PM in Castro Valley
Frequently Asked Questions
- What is the time difference between Sydney and Castro Valley?
- Castro Valley is 17 hours behind Sydney. Sydney is currently UTC+10 and Castro Valley is UTC-7.
- Is Castro Valley ahead of or behind Sydney?
- Castro Valley is behind Sydney.
- What is the best time to call Castro Valley from Sydney?
- On a typical weekday, the best time is 09:00 AM–10:00 AM in Sydney (04:00 PM–05:00 PM in Castro Valley), when both cities are within business hours.
- Does the time difference between Sydney and Castro Valley change during the year?
- No. Neither city's daylight saving schedule changes the offset between them.