JST to AEDT
+2hJST
JSTSOURCEAEDT
AEDTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and AEDT on the World Map
The map below highlights the JST (Japan Standard Time) and AEDT (Australian Eastern Daylight Time) timezone regions across the globe.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
Comparing Time Zones: JST and AEDT
JST runs on Japan Standard Time (JST) at UTC+09:00. AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. That puts JST 2 hours ahead of AEDT — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in JST it is 11:00 AM in AEDT. Midnight in JST is 2:00 AM in AEDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
JST to AEDT time conversion table
| JST (JST) | AEDT (AEDT) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert JST to AEDT time
- Scheduling a call from JST to AEDT: a 10:00 AM start in JST lands at 12:00 PM in AEDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both JST and AEDT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM JST time (11:00 AM–5:00 PM AEDT). That is roughly 6 hours of usable overlap.
- Booking travel or deliveries: tracking AEDT local time against JST keeps pickup windows and arrival estimates honest across the +2h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM JST as the recurring meeting window if you work primarily from JST and need AEDT colleagues present.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
Best time to call between JST and AEDT
Both JST and AEDT sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM JST, which is 11:00 AM–5:00 PM AEDT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
JST and AEDT share 6 hours of working-hours overlap (9:00 AM–3:00 PM JST), so scheduling a live meeting is straightforward.
JST is 2 hours ahead of AEDT (JST UTC+09:00 → AEDT UTC+11:00). The shared working window is 9:00 AM–3:00 PM JST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
JST
Does not observe DST
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between JST and AEDT?
JST (JST, UTC+09:00) is 2 hours ahead of AEDT (AEDT, UTC+11:00). The gap is currently +2h.
How do I convert JST time to AEDT time?
Add +2h to JST local time. For example, 9:00 AM in JST is 11:00 AM in AEDT.
What time is it in AEDT right now?
AEDT uses AEDT at UTC+11:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from JST.
What is the best time to call AEDT from JST?
Call between 9:00 AM and 3:00 PM JST — that maps to 11:00 AM–5:00 PM AEDT and keeps both parties inside the working day.
Which is ahead, JST or AEDT?
JST is 2 hours ahead of AEDT. When it is 12:00 PM in JST it is 2:00 PM in AEDT.
Does daylight saving time affect the JST–AEDT difference?
Neither zone observes daylight saving time, so the +2h offset between JST and AEDT is fixed all year.
Which other cities share JST's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, JST's zone?
JST is used in Japan.
Is there a day difference between JST and AEDT?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between JST and AEDT?
AEDT is +2h from JST.
What timezone is JST in?
JST operates on its local timezone.
What timezone is AEDT in?
AEDT operates on its local timezone.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the AEDT timezone?
Major cities in the AEDT timezone include Sydney, Melbourne, Canberra, Hobart, Newcastle.
What is the UTC offset for AEDT?
Australian Eastern Daylight Time (AEDT) is at UTC+11:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEDT timezone?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
When is it midnight in JST, what time is it in AEDT?
When it is 12:00 AM (midnight) in JST (JST), it is +2h later in AEDT (AEDT).
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