JST to AEST Converter
Convert time between Japan Standard Time (JST) and Australian Eastern Time (AEST/AEDT).
Convert a specific time
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
- IndiaIST, UTC+5:30
- Eastern Time – New YorkEDT, UTC-4
- Central Time – ChicagoCDT, UTC-5
- Mountain Time – DenverMDT, UTC-6
- Arizona – PhoenixMST, UTC-7
- Pacific Time – Los AngelesPDT, UTC-7
- Mexico CityCST, UTC-6
- Saskatchewan – ReginaCST, UTC-6
- UTC / GMTUTC, UTC+0
- United Kingdom – LondonBST, UTC+1
- Central Europe – Paris, BerlinCEST, UTC+2
- Gulf – DubaiGST, UTC+4
- SingaporeSGT, UTC+8
- Japan – TokyoJST, UTC+9
- Australia Eastern – SydneyAEST, UTC+10
- EST (always UTC-5)Fixed offset, no DST
- CST (always UTC-6)Fixed offset, no DST
- MST (always UTC-7)Fixed offset, no DST
- PST (always UTC-8)Fixed offset, no DST
Time Difference
Japan Standard Time is 1 hour behind Australian Eastern Time right now.
- Now until Oct 4, 2026: Japan Standard Time is 1 hour behind Australian Eastern Time (JST → AEST).
- Oct 4, 2026 – Apr 4, 2027: Japan Standard Time is 2 hours behind Australian Eastern Time (JST → AEDT).
- From Apr 4, 2027: Japan Standard Time is 1 hour behind Australian Eastern Time (JST → AEST).
Australian Eastern Time is on AEST right now
Best time to call
Convenient overlapping hours on Sunday, September 20, 2026.
| JST (Japan Standard Time) | AEST (Australian Eastern Time) |
|---|---|
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
These hours fall within 9 AM–5 PM in both places.
Convert another time zone Plan a meeting across JST and AESTJST to AEST conversion table
For Sunday, September 20, 2026 in Japan Standard Time.
| JST | AEST |
|---|---|
| 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) |
About these time zones
Japan Standard Time (JST)
Japan Standard Time (JST) is UTC+9 all year across the whole of Japan. Japan has not observed daylight saving time since 1951. JST shares its offset with Korea Standard Time.
Australian Eastern Standard Time (AEST)
Australian Eastern Standard Time (AEST) is UTC+10. New South Wales, Victoria, Tasmania and the ACT use AEST in winter and Australian Eastern Daylight Time (AEDT, UTC+11) from the first Sunday in October to the first Sunday in April. Queensland stays on AEST all year.
JST to AEST FAQs
What time is it in AEST when it is 9 AM JST?
On Sunday, September 20, 2026, 9:00 AM JST is 10:00 AM AEST in Australian Eastern Time.
How many hours ahead is JST from AEST?
It depends on the time of year because of daylight saving time. Now until Oct 4, 2026: Japan Standard Time is 1 hour behind Australian Eastern Time (JST → AEST). Oct 4, 2026 – Apr 4, 2027: Japan Standard Time is 2 hours behind Australian Eastern Time (JST → AEDT).
Should I use AEST or AEDT?
Australian Eastern Time is on AEST (UTC+10) on Sunday, September 20, 2026. Many people write “AEST” all year, but strictly AEST means Australian Eastern Standard Time (always UTC+10). This converter follows the real local time in Australian Eastern Time, including daylight saving time.
What is the best time for a call between JST and AEST?
On Sunday, September 20, 2026, good options are 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). These fall within normal 9 AM–5 PM working hours in both places.
Does JST change for daylight saving time?
No. JST stays at UTC+9 all year.
Does AEST change for daylight saving time?
The region changes: Australian Eastern Time switches between AEST and AEDT, so conversions depend on the date. AEST itself always means UTC+10.