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AST to JST Time Converter

Convert Atlantic Standard Time (AST, UTC-4) to Japan Standard Time (JST, UTC+9).AST is used in the North America region and JST is used in the Asia region.

AST to JST Conversion Table

ASTJST
12:00 AM12:00 PM
3:00 AM3:00 PM
6:00 AM6:00 PM
9:00 AM9:00 PM
12:00 PM12:00 AM (+1 day)
3:00 PM3:00 AM (+1 day)
6:00 PM6:00 AM (+1 day)
9:00 PM9:00 AM (+1 day)

What is the time difference between AST and JST?

Atlantic Standard Time (AST) is UTC-4 and Japan Standard Time (JST) is UTC+9. The exact difference can vary due to Daylight Saving Time changes. Our converter automatically accounts for current DST rules to give you accurate conversions.

When is 9 AM AST in JST?

Use the conversion table above to find common time mappings between AST and JST. For precise conversions including DST adjustments, use the interactive converter.

Does AST observe Daylight Saving Time?

Atlantic Standard Time (AST) is based on the America/Halifax timezone. DST observance depends on local regulations. Our converter automatically accounts for current DST rules.

AST to JST Time Converter

Convert Atlantic Standard Time to Japan Standard Time

AST
Atlantic Standard Time
05:03 AM
UTC-4
JST
Japan Standard Time
05:03 PM
UTC+9

Convert a Specific Time

:
12:00 PM
=
12:00 AM
+1 day (next day)

AST to JST Conversion Table

ASTJST
12:00 AM12:00 PM (-1)
3:00 AM3:00 PM
6:00 AM6:00 PM
9:00 AM9:00 PM
12:00 PM12:00 AM (+1)
3:00 PM3:00 AM
6:00 PM6:00 AM
9:00 PM9:00 AM

Frequently Asked Questions

What is the time difference between AST and JST?

Atlantic Standard Time (AST) is UTC-4 and Japan Standard Time (JST) is UTC+9. The exact difference can vary due to Daylight Saving Time changes.

When is 9 AM AST in JST?

Use our converter above to find the exact time. Enter 9:00 in the AST field to see the corresponding JST time, accounting for current DST rules.

Does AST observe Daylight Saving Time?

Atlantic Standard Time (AST) is based on the America/Halifax timezone. DST observance depends on local regulations. Our converter automatically accounts for current DST rules.

Convert JST to AST instead