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AEST to JST Time Converter

Use this AEST to JST time converter to compare Australia and Japan time instantly. JST is 1 hour behind AEST, so 9:00 AM AEST becomes 8:00 AM JST and 5:00 PM AEST becomes 4:00 PM JST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.

AEST Australian Eastern Standard Time
...
JST Japan Standard Time
...
Select a time to convert

AEST to JST Quick Facts

Use this AEST to JST converter to compare Australia and Japan time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 10:00 AM AEST / 9:00 AM JST.

Time Difference
Japan Standard Time is 1 hour behind Australian Eastern Standard Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 10:00 AM AEST and 9:00 AM JST.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert AEST to JST

Converting between Australian Eastern Standard Time and Japan Standard Time means accounting for a 1 hour gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your AEST Time

Pick the date and time in Australian Eastern Standard Time (UTC +10) that you want to convert. Hit "Now" to load the current AEST time instantly, or use "+1h" to step forward and compare.

Read the JST Result

The equivalent Japan Standard Time (UTC +9) time appears immediately. Since JST is 1 hour behind of AEST, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the JST 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 AEST to JST Converter

Align AEST–JST Meetings Instantly

When someone in Australia suggests 10:00 AM AEST, that's 9:00 AM JST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.

Spot Date-Line Shifts at a Glance

Late-night AEST times can land on a different date in JST 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.

Handles DST Transitions Automatically

Daylight Saving adjustments can widen or narrow the AEST–JST 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.

Never Miss a AEST-Timed Event

Product launches, sports matches, and webinars are often announced in AEST. Convert the event time to JST so you know exactly when to tune in — with a 1 hour difference, a morning event in Australia falls during work hours in Japan.

AEST to JST Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

Australian Eastern Standard Time to Japan Standard Time full day schedule

12:00 AM
AEST
→
11:00 PM
JST
(previous day)
1:00 AM
AEST
→
12:00 AM
JST
2:00 AM
AEST
→
1:00 AM
JST
3:00 AM
AEST
→
2:00 AM
JST
4:00 AM
AEST
→
3:00 AM
JST
5:00 AM
AEST
→
4:00 AM
JST
6:00 AM
AEST
→
5:00 AM
JST
7:00 AM
AEST
→
6:00 AM
JST
8:00 AM
AEST
→
7:00 AM
JST
9:00 AM
AEST
→
8:00 AM
JST
10:00 AM
AEST
→
9:00 AM
JST
11:00 AM
AEST
→
10:00 AM
JST
12:00 PM
AEST
→
11:00 AM
JST
1:00 PM
AEST
→
12:00 PM
JST
2:00 PM
AEST
→
1:00 PM
JST
3:00 PM
AEST
→
2:00 PM
JST
4:00 PM
AEST
→
3:00 PM
JST
5:00 PM
AEST
→
4:00 PM
JST
6:00 PM
AEST
→
5:00 PM
JST
7:00 PM
AEST
→
6:00 PM
JST
8:00 PM
AEST
→
7:00 PM
JST
9:00 PM
AEST
→
8:00 PM
JST
10:00 PM
AEST
→
9:00 PM
JST
11:00 PM
AEST
→
10:00 PM
JST
Reviewed by iFormat Time Tools Team Last updated

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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AEST to JST FAQ

Quick answers about daylight saving time, date changes, business-hour overlap, and the most common scheduling questions between Australian Eastern Standard Time and Japan Standard Time.

What is the time difference between AEST and JST?

JST is 1 hour behind AEST. AEST is UTC +10:00 and JST is UTC +9:00 relative to UTC. AEST observes daylight saving but JST does not, so the gap between them shifts by one hour twice a year. In AEST winter the difference is 1 hour; in summer it changes by an hour.

When can AEST and JST have business-hour overlap?

Aim for 10:00–17:00 AEST, which is 09:00–16:00 JST. Both sides stay inside standard business hours.

Does AEST or JST observe daylight saving time?

AEST observes daylight saving but JST does not, so the gap between them shifts by one hour twice a year. In AEST winter the difference is 1 hour; in summer it changes by an hour.

How do I quickly convert AEST to JST?

To convert AEST to JST, add 1 hour subtract from the AEST time. Example: if it's 10:00 AM AEST, it's 09:00 JST that day. The live converter at the top of this page handles DST automatically.

Why convert AEST to JST?

Australian companies (banking, mining, education) heavily partner with Japanese counterparts. The 1-hour winter gap and same-time-zone-during-AEDT period make this a tight, easy corridor for daily business.

When is the AEST/JST gap exactly 1 hour vs 2 hours?

AEST is normally 1 hour ahead of JST. When Sydney/Melbourne move to AEDT (October-April), the gap grows to 2 hours. Japan never changes, so check whether Australia is on DST when scheduling.

Best time for AU-Japan calls?

AEST 11:00 AM-3:00 PM = JST 10:00 AM-2:00 PM. Solid 4-hour overlap right in the middle of both business days.

Popular AEST Time Converters

Explore more AEST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.

Convert Other Time Zones to JST

Find the time difference from any major zone into Japan Standard Time. Use these pages when scheduling with Japan from a different region.

🇯🇵 Swap direction — JST to AEST Converter