AEST to JST Time Converter
Japan Standard Time (JST) is currently 1 hour behind Australian Eastern Standard Time (AEST). AEST is UTC+10 and JST is UTC+9. The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 10:00 AM and 5:00 PM in AEST, which is 9:00 AM to 4:00 PM in JST.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: AEST to JST
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
AEST and JST are fixed offsets, so the difference between them never changes.
AEST is UTC+10. Sydney and Melbourne switch to AEDT (UTC+11) from October to April, while Brisbane stays on AEST year round.
JST is UTC+9. Japan has no daylight saving, so this offset never changes.
Frequently Asked Questions
How many hours behind is JST compared to AEST?
JST is currently 1 hour behind AEST. AEST and JST are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in AEST in JST?
9:00 AM in AEST is 8:00 AM in JST.
What is the best time for a call between AEST and JST?
Both sides are inside 9:00 AM to 5:00 PM office hours between 10:00 AM and 5:00 PM in AEST, which is 9:00 AM to 4:00 PM in JST.