Sydney to Tokyo Time Converter
Tokyo is 1 hour behind Sydney on AEST and 2 hours behind during AEDT. 9:00 AM in Sydney is 8:00 AM in Tokyo on AEST and 7:00 AM on AEDT.
Daylight saving note: Tokyo never changes its clocks. It is 1 hour behind Sydney on AEST (first Sunday in April to first Sunday in October) and 2 hours behind while Sydney is on AEDT.
AEST/AEDT to JST Conversion Table
Full 24-hour reference table. Use the live clocks above for the exact current offset.
| 🇦🇺 AEST/AEDT | 🇯🇵 AEST → JSTUTC+10 to UTC+9, while Sydney is on AEST | 🇯🇵 AEDT → JSTUTC+11 to UTC+9, while Sydney is on AEDT | Note |
|---|---|---|---|
| 00:00 | 11:00 PM | 10:00 PM | prev day |
| 01:00 | 12:00 AM | 11:00 PM | prev day |
| 02:00 | 1:00 AM | 12:00 AM | |
| 03:00 | 2:00 AM | 1:00 AM | |
| 04:00 | 3:00 AM | 2:00 AM | |
| 05:00 | 4:00 AM | 3:00 AM | |
| 06:00 | 5:00 AM | 4:00 AM | |
| 07:00 | 6:00 AM | 5:00 AM | |
| 08:00 | 7:00 AM | 6:00 AM | |
| 09:00 | 8:00 AM | 7:00 AM | |
| 10:00 | 9:00 AM | 8:00 AM | |
| 11:00 | 10:00 AM | 9:00 AM | |
| 12:00 | 11:00 AM | 10:00 AM | |
| 13:00 | 12:00 PM | 11:00 AM | |
| 14:00 | 1:00 PM | 12:00 PM | |
| 15:00 | 2:00 PM | 1:00 PM | |
| 16:00 | 3:00 PM | 2:00 PM | |
| 17:00 | 4:00 PM | 3:00 PM | |
| 18:00 | 5:00 PM | 4:00 PM | |
| 19:00 | 6:00 PM | 5:00 PM | |
| 20:00 | 7:00 PM | 6:00 PM | |
| 21:00 | 8:00 PM | 7:00 PM | |
| 22:00 | 9:00 PM | 8:00 PM | |
| 23:00 | 10:00 PM | 9:00 PM |
"prev day" = converted time falls on the previous calendar day.
Best Hours to Schedule Sydney–Tokyo Calls
Both cities are close enough for a long shared day. On AEST, 10:00 AM to 5:00 PM in Sydney is 9:00 AM to 4:00 PM in Tokyo, which is 7 hours. On AEDT the window opens an hour later: 11:00 AM to 5:00 PM in Sydney is 9:00 AM to 3:00 PM in Tokyo, 6 hours. Sydney's 5 PM close is the limit in both seasons, and Tokyo has an hour or two left when it comes.
| When | Sydney | Tokyo | Fit |
|---|---|---|---|
| AEST → JST (UTC+10 to UTC+9, while Sydney is on AEST) | 10:00 AM–5:00 PM | 9:00 AM–4:00 PM | Both inside 9 AM–5 PMSydney's 5 PM close ends it. Tokyo still has an hour left. |
| AEDT → JST (UTC+11 to UTC+9, while Sydney is on AEDT) | 11:00 AM–5:00 PM | 9:00 AM–3:00 PM | Both inside 9 AM–5 PMOne hour shorter, because Sydney is an hour further ahead. |
"Inside 9 AM–5 PM" is a planning assumption for a standard office day on each side, not a claim about any company's hours.
About Sydney (AEST/AEDT)
Sydney moves its clocks, Tokyo doesn't. Sydney goes forward to AEDT on the first Sunday in October and back to AEST on the first Sunday in April, which is the opposite season to Europe and North America. A meeting fixed at 3:00 PM in Sydney is 2:00 PM in Tokyo on AEST and 1:00 PM on AEDT.
About Tokyo (JST)
Tokyo uses Japan Standard Time (JST, UTC+9) all year. The only moving part in this pair is Sydney, so the Tokyo end of a recurring call stays at the same JST hour while the Sydney clock shifts by an hour twice a year. Going the other way, 9:00 AM in Tokyo is 10:00 AM in Sydney on AEST and 11:00 AM on AEDT.
How to Avoid Sydney–Tokyo Conversion Mistakes
Tokyo is still on the previous calendar day before these AEST/AEDT times: 1:00 AM for AEST → JST, 2:00 AM for AEDT → JST. For example, 12:00 AM AEST/AEDT is 11:00 PM in Tokyo on the previous day (AEST → JST).
AEST and AEDT are different zones, and mixing them up leaves you an hour out. Many Sydney calendars simply say "AEST" all year, which is wrong from October to April. If a Tokyo colleague asks for 10:00 AM JST, that's 11:00 AM in Sydney in winter and 12:00 PM in summer. Name Sydney as a city on the invite instead of the abbreviation.
Frequently Asked Questions
What is the time difference between Sydney and Tokyo?
Tokyo is 1 hour behind Sydney while Sydney is on AEST (April to October) and 2 hours behind while it is on AEDT (October to April). Tokyo doesn't change its clocks.
What time is 9 AM in Sydney in Tokyo?
On AEST, 9:00 AM in Sydney is 8:00 AM in Tokyo. On AEDT it's 7:00 AM. Neither result crosses midnight.
When does the Sydney to Tokyo gap change?
On the first Sunday in October, when Sydney moves to AEDT and the gap widens from 1 hour to 2, and on the first Sunday in April, when it narrows back to 1. Tokyo stays on JST on both dates.
What is the best time for a Sydney to Tokyo call?
Late morning to mid afternoon in Sydney. On AEST, 10:00 AM to 5:00 PM there is 9:00 AM to 4:00 PM in Tokyo. On AEDT, use 11:00 AM to 5:00 PM, which is 9:00 AM to 3:00 PM in Tokyo.