JST is 1 hour behind AEST. Example city: AEST in Sydney (winter) vs JST in Tokyo.
Offset reference
| Zone | Abbreviation | UTC offset | Example city |
|---|---|---|---|
| Australian Eastern Standard Time | AEST | UTC+10:00 | Sydney (winter) |
| Japan Standard Time | JST | UTC+09:00 | Tokyo |
AEST to JST hour-by-hour
| AEST | JST |
|---|---|
| 00:00 | 23:00 |
| 01:00 | 00:00 |
| 02:00 | 01:00 |
| 03:00 | 02:00 |
| 04:00 | 03:00 |
| 05:00 | 04:00 |
| 06:00 | 05:00 |
| 07:00 | 06:00 |
| 08:00 | 07:00 |
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 11:00 | 10:00 |
| 12:00 | 11:00 |
| 13:00 | 12:00 |
| 14:00 | 13:00 |
| 15:00 | 14:00 |
| 16:00 | 15:00 |
| 17:00 | 16:00 |
| 18:00 | 17:00 |
| 19:00 | 18:00 |
| 20:00 | 19:00 |
| 21:00 | 20:00 |
| 22:00 | 21:00 |
| 23:00 | 22:00 |
This table uses the fixed offsets above. For real dates with DST transitions, use the Time Zone Converter or a city clock such as World Clock.
DST warning for AEST to JST
Timezone abbreviations can be ambiguous and daylight saving time can change real-world offsets. Use the conversion table on this page for a quick reference, then verify the current local time before meetings or travel.
Business-hour overlap
For work calls, compare 9:00 AM to 5:00 PM in both zones and avoid scheduling during DST change weeks unless the recipient confirms the time.
AEST to JST FAQ
Is AEST always the same offset? Some abbreviations are seasonal or used in more than one region. Check the example cities and offset reference.
Can I use this for calendar invites? Yes, but use named IANA time zones in calendar software when possible because they handle DST more safely.