JST to AEST Time Converter
Use this JST to AEST time converter to compare Japan and Australia time instantly. AEST is 1 hour ahead of JST, so 9:00 AM JST becomes 10:00 AM AEST and 5:00 PM JST becomes 6:00 PM AEST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
JST to AEST Quick Facts
Use this JST to AEST converter to compare Japan and Australia time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM JST / 10:00 AM AEST.
How to Convert JST to AEST
Converting between Japan Standard Time and Australian Eastern Standard Time means accounting for a 1 hour gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Japan Standard Time (UTC +9) that you want to convert. Hit "Now" to load the current JST time instantly, or use "+1h" to step forward and compare.
The equivalent Australian Eastern Standard Time (UTC +10) time appears immediately. Since AEST is 1 hour ahead of JST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the AEST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our JST to AEST Converter
When someone in Japan suggests 9:00 AM JST, that's 10:00 AM AEST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night JST times can land on a different date in AEST because of the 1 hour offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.
Daylight Saving adjustments can widen or narrow the JST–AEST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in JST. Convert the event time to AEST so you know exactly when to tune in — with a 1 hour difference, a morning event in Japan falls during work hours in Australia.
JST to AEST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Japan Standard Time to Australian Eastern Standard Time full day schedule
| Japan Standard Time | Australian Eastern Standard Time |
|---|---|
| 12:00 AM |
1:00 AM
|
| 1:00 AM |
2:00 AM
|
| 2:00 AM |
3:00 AM
|
| 3:00 AM |
4:00 AM
|
| 4:00 AM |
5:00 AM
|
| 5:00 AM |
6:00 AM
|
| 6:00 AM |
7:00 AM
|
| 7:00 AM |
8:00 AM
|
| 8:00 AM |
9:00 AM
|
| 9:00 AM |
10:00 AM
|
| 10:00 AM |
11:00 AM
|
| 11:00 AM |
12:00 PM
|
| 12:00 PM |
1:00 PM
|
| 1:00 PM |
2:00 PM
|
| 2:00 PM |
3:00 PM
|
| 3:00 PM |
4:00 PM
|
| 4:00 PM |
5:00 PM
|
| 5:00 PM |
6:00 PM
|
| 6:00 PM |
7:00 PM
|
| 7:00 PM |
8:00 PM
|
| 8:00 PM |
9:00 PM
|
| 9:00 PM |
10:00 PM
|
| 10:00 PM |
11:00 PM
|
| 11:00 PM |
12:00 AM
(next day)
|
Timezone offsets and DST rules verified against the IANA Time Zone Database. Conversion math and business-hour overlap windows double-checked against real-world scheduling scenarios.
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JST to AEST FAQ
Quick answers about daylight saving time, date changes, business-hour overlap, and the most common scheduling questions between Japan Standard Time and Australian Eastern Standard Time.
What is the time difference between JST and AEST?
When can JST and AEST have business-hour overlap?
Does JST or AEST observe daylight saving time?
How do I quickly convert JST to AEST?
Why convert AEST to JST?
When is the AEST/JST gap exactly 1 hour vs 2 hours?
Best time for AU-Japan calls?
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Convert Other Time Zones to AEST
Find the time difference from any major zone into Australian Eastern Standard Time. Use these pages when scheduling with Australia from a different region.