Convert JST to AST Time
Free online converter with current times, time difference, and conversion table between JST and AST time zones.
Current time in JST: Loading...
Current time in AST: Loading...
Time difference: -13 hours
JST to AST Conversion Table
This table shows common JST times converted to AST time:
About JST and AST Time Zones
JST Time Zone
Full Name: Japan Standard Time
UTC Offset: UTC+9
Current Time: Loading...
Standard time in Japan.
Used in: Japan
AST Time Zone
Full Name: Atlantic Standard Time
UTC Offset: UTC-4
Current Time: Loading...
Standard time in the Atlantic Time Zone.
Used in: Canada, Bermuda, Barbados, Dominican Republic
How to Convert JST to AST
Enter JST Time
Enter the JST time you want to convert using the time picker or by typing directly in 24-hour format.
Click Convert
Click the "Convert Time" button to perform the conversion from JST to AST.
View Result
The equivalent AST time will be displayed, along with the time difference between the two zones.
Use Conversion Table
For quick reference, you can also use the conversion table below that shows common JST times converted to AST.
Common Uses for JST to AST Conversion
International Business
Schedule meetings and calls between locations in Japan and Canada time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between Japan and Canada.
Event Scheduling
Convert event times for international broadcasts, webinars, or sports events between these regions.
Keeping in Touch
Find the best times to call friends, family, or colleagues across these time zones.
Frequently Asked Questions
The time difference between JST and AST is -13 hours. This means that when it's noon (12:00 PM) in JST, it's 11:00 PM in AST.
To convert JST to AST time, subtract 13 hours from the JST time. You can use our converter at the top of this page for instant and accurate conversions.
JST does not observe DST. AST observes DST.
Minimal overlap in business hours.
Our converter uses standard time zone offsets. For the most accurate conversions during DST transition periods, please verify the exact dates when DST begins or ends in the relevant regions, as these can vary by year and location.