Canada Atlantic Time to Japan Standard Time
Convert times between Canada Atlantic Time (AST, UTC-4:00) and Japan Standard Time (JST, UTC+9:00). Japan Standard Time is 13 hours ahead of Canada Atlantic Time in standard time. During daylight saving time this difference changes to 12 hours.
UTC-4:00 / -3:00→UTC+9:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Canada Atlantic Time | AST / ADT | UTC-4:00 | UTC-3:00 | Canada |
| Japan Standard Time | JST | UTC+9:00 | — | Japan |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (AST → JST)
| Canada Atlantic Time | Japan Standard Time |
|---|---|
| 12:00 AM AST | 1:00 PM JST |
| 6:00 AM AST | 7:00 PM JST |
| 9:00 AM AST | 10:00 PM JST |
| 12:00 PM AST | 1:00 AM (next day) JST |
| 3:00 PM AST | 4:00 AM (next day) JST |
| 6:00 PM AST | 7:00 AM (next day) JST |
| 9:00 PM AST | 10:00 AM (next day) JST |
Summer (DST) Conversion (ADT → JST)
| Canada Atlantic Time (summer) | Japan Standard Time (summer) |
|---|---|
| 12:00 AM ADT | 12:00 PM JST |
| 6:00 AM ADT | 6:00 PM JST |
| 9:00 AM ADT | 9:00 PM JST |
| 12:00 PM ADT | 12:00 AM (next day) JST |
| 3:00 PM ADT | 3:00 AM (next day) JST |
| 6:00 PM ADT | 6:00 AM (next day) JST |
| 9:00 PM ADT | 9:00 AM (next day) JST |
Daylight Saving Time (DST) Notes
- Canada Atlantic Time observes DST. Clocks advance 1 hour to ADT (UTC-3:00) roughly from month 3 to 11.
- The offset difference shifts between 13h (standard) and 12h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert AST to JST?
Add 13 hours to the AST time to get JST. For example, 9:00 AM AST = 10:00 PM JST.
What is the current UTC offset for Canada Atlantic Time?
Canada Atlantic Time is UTC-4:00 during standard time (AST) and UTC-3:00 during summer daylight saving time (ADT).
Is Japan Standard Time ahead or behind Canada Atlantic Time?
Japan Standard Time is 13 hours ahead of Canada Atlantic Time in standard time.
When is a good time to schedule a meeting between AST and JST?
Due to the 13-hour difference, business-hours overlap may be limited. Use the live timezone converter to find a mutually convenient time.
Related Timezone Conversions
Canada Atlantic Time → US Eastern TimeAST / ESTCanada Atlantic Time → US Central TimeAST / CSTCanada Atlantic Time → US Mountain TimeAST / MSTCanada Atlantic Time → US Pacific TimeAST / PSTCanada Atlantic Time → US Alaska TimeAST / AKSTCanada Atlantic Time → Hawaii TimeAST / HSTCanada Atlantic Time → China Standard TimeAST / CSTCanada Atlantic Time → Hong Kong TimeAST / HKT
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.