| Current: | AST — Atlantic Standard Time |
|---|---|
| Next Change: | ADT — Atlantic Daylight Time |
| Current Offset: | UTC/GMT -4 hours |
| Difference: | 1 hour ahead of Columbus |
2025 Time Zones - Southwest Head
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The graph above illustrates clock changes in Southwest Head during 2025.
Time Changes in Southwest Head Over the Years
Daylight Saving Time (DST) changes do not necessarily occur on the same date every year.
| Year | Date & Time | Abbreviation | Time Change | Offset After |
|---|---|---|---|---|
| 2024 | Sun, Mar 10 at 2:00 am | AST → ADT | +1 hour (DST start) | UTC-3h |
| Sun, Nov 3 at 2:00 am | ADT → AST | -1 hour (DST end) | UTC-4h | |
| 2025 | Sun, Mar 9 at 2:00 am | AST → ADT | +1 hour (DST start) | UTC-3h |
| Sun, Nov 2 at 2:00 am | ADT → AST | -1 hour (DST end) | UTC-4h | |
| 2026 | Sun, Mar 8 at 2:00 am | AST → ADT | +1 hour (DST start) | UTC-3h |
| Sun, Nov 1 at 2:00 am | ADT → AST | -1 hour (DST end) | UTC-4h | |
| 2027 | Sun, Mar 14 at 2:00 am | AST → ADT | +1 hour (DST start) | UTC-3h |
| Sun, Nov 7 at 2:00 am | ADT → AST | -1 hour (DST end) | UTC-4h | |
| 2028 | Sun, Mar 12 at 2:00 am | AST → ADT | +1 hour (DST start) | UTC-3h |
| Sun, Nov 5 at 2:00 am | ADT → AST | -1 hour (DST end) | UTC-4h | |
| * All times are local Southwest Head time. Next time change is highlighted. | ||||
Data for the years before 1970 is not available for Southwest Head, however, we have earlier time zone history for Moncton available.
More Information
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Southwest Head
Canada
7:3448am
Friday, December 5, 2025