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Convert JST to AEST

Japan Standard Time (JST) to Australian Eastern Time (AEST)

Japan-Australia trade is significant in mining, energy, and agriculture, with Tokyo and Sydney offices frequently coordinating. The 1-hour gap during AEST makes real-time collaboration effortless, but Australia's shift to AEDT in October widens it to 2 hours -- and Japan does not observe DST, so teams must adjust one-directionally.

When it's 12:00 PM JST, it's 2:00 PM AEST

UTC+9 UTC+11 +2 hours

Interactive Converter

Pick any time and date to convert between JST and AEST.

JST to AEST Conversion Table

Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.

JST AEST
12:00 AM 2:00 AM
1:00 AM 3:00 AM
2:00 AM 4:00 AM
3:00 AM 5:00 AM
4:00 AM 6:00 AM
5:00 AM 7:00 AM
6:00 AM 8:00 AM
7:00 AM 9:00 AM
8:00 AM 10:00 AM
9:00 AM 11:00 AM
10:00 AM 12:00 PM
11:00 AM 1:00 PM
12:00 PM 2:00 PM
1:00 PM 3:00 PM
2:00 PM 4:00 PM
3:00 PM 5:00 PM
4:00 PM 6:00 PM
5:00 PM 7:00 PM
6:00 PM 8:00 PM
7:00 PM 9:00 PM
8:00 PM 10:00 PM
9:00 PM 11:00 PM
10:00 PM 12:00 AM +1 day
11:00 PM 1:00 AM +1 day

Best Meeting Window

Top meeting times for teams in JST and AEST (9 AM -- 6 PM work hours, 1-hour meeting).

12a
3a
6a
9a
12p
3p
6p
9p
JST GMT+9
AEST GMT+11
Overlap
Everyone available
Most available
Some overlap
Outside work hours
1 12:00 PM -- 1:00 PM JST
JST: 12:00 PM AEST: 2:00 PM

All members within working hours. Everyone in mid-day range.

9.3 / 10
2 1:00 PM -- 2:00 PM JST
JST: 1:00 PM AEST: 3:00 PM

All members within working hours. Everyone in mid-day range.

9.3 / 10
3 11:00 AM -- 12:00 PM JST
JST: 11:00 AM AEST: 1:00 PM

All members within working hours. Everyone in mid-day range.

8.9 / 10

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Scheduling Tips

  • Schedule freely during standard business hours -- a 1-2 hour offset means 9 AM-5 PM overlaps almost entirely in both cities.
  • During AEDT (October-April), keep in mind that 9:00 AM Tokyo is 11:00 AM Sydney. Push meetings slightly earlier in JST to stay within the Sydney morning.
  • For cross-market trading or live data handoffs, align on AEST/AEDT calendar labels to avoid confusion during the October and April DST transitions.
  • Japan's fixed schedule is the anchor -- let Australia-side participants adjust their calendars each DST switch rather than moving the meeting for both.

Time Difference & DST

AEST is 2 hours ahead of JST. JST is at UTC+9 and AEST is at UTC+11.

Upcoming DST Transitions:

AEST Clocks fall back on April 6, 2026

The conversion table above reflects the current DST state at build time. Use the interactive converter for live, date-specific conversions.

Major Cities

Japan Standard Time (JST)

  • Tokyo
  • Osaka
  • Yokohama

Australian Eastern Time (AEST)

  • Sydney
  • Canberra
  • Wollongong

Frequently Asked Questions

What is the time difference between JST and AEST?
AEST (Australian Eastern Standard Time, UTC+10) is 1 hour ahead of JST (UTC+9). When it is 10:00 AM in Tokyo, it is 11:00 AM in Sydney. During Australian daylight time (AEDT, UTC+11, October to early April), the gap widens to 2 hours.
Does the JST-AEST gap change during the year?
Yes, but only on the Australian side. Japan does not observe DST. When Australia switches to AEDT (UTC+11) in October, Sydney moves 2 hours ahead of Tokyo instead of 1. This lasts until early April when Australia returns to AEST.
What time is 9 AM JST in Sydney?
9:00 AM JST is 10:00 AM AEST. During Australian daylight time, 9:00 AM JST is 11:00 AM AEDT. The small gap means business hours overlap almost completely.

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