Time Difference Between Waltham and Sydney
Sydney is 14 hours ahead Waltham.
United States
Waltham
America/New_York · UTC-4
Australia
Sydney
Australia/Sydney · UTC+10
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Waltham and Sydney.
Standard working hours don't overlap between Waltham and Sydney. Consider early-morning calls in Waltham or late-evening calls in Sydney.
Waltham to Sydney — 24-Hour Conversion
Each row shows the equivalent local time in Sydney for an hour in Waltham. Working-hours rows (9–18) are highlighted.
| Waltham | Sydney | Match |
|---|---|---|
| Workday in Sydney | ||
| Workday in Sydney | ||
| Workday in Sydney | ||
| Workday in Sydney | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Off hours | ||
| Workday in Waltham | ||
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Workday in Waltham | |
| +1 day | Off hours | |
| +1 day | Workday in Sydney | |
| +1 day | Workday in Sydney | |
| +1 day | Workday in Sydney | |
| +1 day | Workday in Sydney | |
| +1 day | Workday in Sydney |
Frequently Asked Questions
What is the time difference between Waltham and Sydney?
Sydney, Australia (UTC+10) is 14 hours ahead Waltham, United States (UTC-4).
What is the best time to schedule a meeting between Waltham and Sydney?
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 Waltham and Sydney?
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 Waltham, what time is it in Sydney?
Use the conversion table on this page — every hour in Waltham is mapped to its equivalent local time in Sydney, including day shift markers when the date differs.