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

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.

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

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.

Enter Your JST Time

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.

Read the AEST Result

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.

Copy or Fine-Tune

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

Align JST–AEST Meetings Instantly

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.

Spot Date-Line Shifts at a Glance

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.

Handles DST Transitions Automatically

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.

Never Miss a JST-Timed Event

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.

Complete 24-Hour Conversion

Japan Standard Time to Australian Eastern Standard Time full day schedule

12:00 AM
JST
→
1:00 AM
AEST
1:00 AM
JST
→
2:00 AM
AEST
2:00 AM
JST
→
3:00 AM
AEST
3:00 AM
JST
→
4:00 AM
AEST
4:00 AM
JST
→
5:00 AM
AEST
5:00 AM
JST
→
6:00 AM
AEST
6:00 AM
JST
→
7:00 AM
AEST
7:00 AM
JST
→
8:00 AM
AEST
8:00 AM
JST
→
9:00 AM
AEST
9:00 AM
JST
→
10:00 AM
AEST
10:00 AM
JST
→
11:00 AM
AEST
11:00 AM
JST
→
12:00 PM
AEST
12:00 PM
JST
→
1:00 PM
AEST
1:00 PM
JST
→
2:00 PM
AEST
2:00 PM
JST
→
3:00 PM
AEST
3:00 PM
JST
→
4:00 PM
AEST
4:00 PM
JST
→
5:00 PM
AEST
5:00 PM
JST
→
6:00 PM
AEST
6:00 PM
JST
→
7:00 PM
AEST
7:00 PM
JST
→
8:00 PM
AEST
8:00 PM
JST
→
9:00 PM
AEST
9:00 PM
JST
→
10:00 PM
AEST
10:00 PM
JST
→
11:00 PM
AEST
11:00 PM
JST
→
12:00 AM
AEST
(next day)
The two zones in context

JST vs AEST — cities and working rhythm

JST — Japan Standard Time
Primary cities: Tokyo, Osaka, Sapporo, Nagoya, Fukuoka

Japan — one of the few large economies that has no DST, so JST is JST year-round (UTC+9). Business hours 9 AM – 6 PM JST with strong presence-based culture (staying past 7 PM is common). Same offset as Korean Standard Time (KST).

AEST — Australian Eastern Standard Time
Primary cities: Sydney (winter), Melbourne (winter), Brisbane (year-round)

Australia's east-coast winter offset (April to October), UTC+10. Brisbane stays on AEST year-round since Queensland has no DST. Big gap with Europe (8-10 h ahead) and North America (14-17 h ahead) — often faster to just email.

Time gap: AEST is 1.0 hours ahead of JST (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).

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?

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

When can JST and AEST have business-hour overlap?

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

Does JST or AEST observe daylight saving time?

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

How do I quickly convert JST to AEST?

To convert JST to AEST, add 1 hour to the JST time. Example: if it's 10:00 AM JST, it's 11:00 AEST 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 JST Time Converters

Explore more JST 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 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.

🇦🇺 Swap direction — AEST to JST Converter