Time Difference Between Castro Valley and Singapore
Singapore is 15 hours ahead Castro Valley.
United States
Castro Valley
America/Los_Angeles · UTC-7
Singapore
Singapore
Asia/Singapore · UTC+8
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Castro Valley and Singapore.
Standard working hours don't overlap between Castro Valley and Singapore. Consider early-morning calls in Castro Valley or late-evening calls in Singapore.
Castro Valley to Singapore — 24-Hour Conversion
Each row shows the equivalent local time in Singapore for an hour in Castro Valley. Working-hours rows (9–18) are highlighted.
| Castro Valley | Singapore | Match |
|---|---|---|
| Workday in Singapore | ||
| Workday in Singapore | ||
| Workday in Singapore | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Castro Valley | |
| +1 day | Workday in Singapore | |
| +1 day | Workday in Singapore | |
| +1 day | Workday in Singapore | |
| +1 day | Workday in Singapore | |
| +1 day | Workday in Singapore | |
| +1 day | Workday in Singapore |
Frequently Asked Questions
What is the time difference between Castro Valley and Singapore?
Singapore, Singapore (UTC+8) is 15 hours ahead Castro Valley, United States (UTC-7).
What is the best time to schedule a meeting between Castro Valley and Singapore?
The best meeting times overlap when both cities are within standard working hours (9 AM – 6 PM). The full hour-by-hour table on this page lists every overlap window.
Does daylight saving time change the difference between Castro Valley and Singapore?
Yes — when one city observes daylight saving time and the other does not, the gap shifts by an hour. The conversion table on this page reflects the current offset, including any active DST.
When it is 9 AM in Castro Valley, what time is it in Singapore?
Use the conversion table on this page — every hour in Castro Valley is mapped to its equivalent local time in Singapore, including day shift markers when the date differs.