Compare AEST vs JST
See the 1-hour difference between AEST and JST, check daylight saving impacts, and find the best times to schedule meetings.
How to Find the Time Difference Between AEST and JST
Open the AEST to JST comparison page: Visit https://www.xconvert.com/time-converter/aest-vs-jst to load a visual comparison between Australian Eastern Standard Time (AEST, UTC+10:00) and Japan Standard Time (JST, UTC+9:00). This page is useful when you are scheduling a supplier call with Tokyo, coordinating an Australia–Japan logistics handoff, or checking whether a Sydney-based team can overlap with colleagues in Japan during normal office hours.
Add relevant comparison cities: Click “+ Add City” and search for cities such as Sydney, Brisbane, and Tokyo to see how the named locations line up against the AEST and JST rows. This is especially helpful for industries with heavy Australia–Japan ties, including mining exports, automotive supply chains, tourism, higher education, and airline operations on routes like Sydney–Tokyo and Brisbane–Tokyo.
Drag to select a meeting window on the grid: Use the “Select” button if needed, then drag across the colored timeline on the AEST row to highlight a time range in purple; you can resize it with the left and right handles or move it by dragging the center. For example, if you drag 9:00 AM to 11:00 AM AEST, the JST row will show 8:00 AM to 10:00 AM JST, confirming that JST is 1 hour behind AEST and that a mid-morning meeting in eastern Australia lands in the early morning workday in Japan.
Export or share the selected time: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical for sending a confirmed meeting slot to a Tokyo client, creating a calendar invite for a regional APAC operations team, or sharing a link with travel coordinators arranging airport transfers and check-in times across Australia and Japan.
AEST vs JST Offset Explained
AEST is 1 hour ahead of JST. AEST has a fixed offset of UTC+10:00, while JST is UTC+9:00, so when it is 9:00 AM in AEST, it is 8:00 AM in JST on the same calendar day. This makes Australia’s eastern standard-time regions slightly ahead of Japan, which is useful for planning same-day business communication because the workday in Japan starts just one hour earlier relative to AEST-based teams.
The key complication is that AEST itself is standard time, not daylight saving time. In Australia, places such as Brisbane, Queensland stay on AEST year-round, but Sydney, Melbourne, Canberra, and Hobart do not remain on AEST all year because they switch to AEDT (UTC+11:00) during daylight saving. That means if you are comparing JST to Brisbane, the difference stays 1 hour all year, but if you are really comparing JST to Sydney in summer, the difference becomes 2 hours, because Sydney moves one hour forward to AEDT.
Australia’s daylight saving period typically starts on the first Sunday in October and ends on the first Sunday in April. For the 2025–2026 season, daylight saving in southeastern Australia begins on 5 October 2025 and ends on 5 April 2026, so during that period Sydney/Melbourne are UTC+11:00, while Tokyo remains UTC+9:00 with no seasonal clock change. Japan does not observe daylight saving time, so JST stays constant throughout the year, which makes Tokyo scheduling predictable for airlines, manufacturers, trading desks, and remote teams working across the Asia-Pacific region.
This distinction matters in real operations. A Brisbane-based export manager working with partners in Osaka will usually schedule around a stable 1-hour difference, while a Sydney-based fintech or media team may need to account for a 2-hour summer gap when dealing with Tokyo. If it is 3:00 PM AEST in Brisbane, it is 2:00 PM JST in Tokyo; but if it is 3:00 PM AEDT in Sydney during January, it is still 1:00 PM JST, not 2:00 PM.
Frequently Asked Questions
What is the exact time difference between AEST and JST?
AEST is exactly 1 hour ahead of JST. Since AEST is UTC+10:00 and JST is UTC+9:00, a time like 10:00 AM AEST converts to 9:00 AM JST on the same day. This narrow gap makes the two zones relatively easy to coordinate compared with Australia–Europe or Japan–US scheduling.
Is Japan ahead of Australia or behind Australia?
Japan is behind AEST by 1 hour. If you are comparing Tokyo with Brisbane, which uses AEST all year, then 8:00 PM in Brisbane is 7:00 PM in Tokyo. However, if you mean Sydney in summer, Japan is 2 hours behind Sydney because Sydney may be on AEDT (UTC+11:00) rather than AEST.
Does JST have daylight saving time?
No, Japan Standard Time does not observe daylight saving time. Japan stays on UTC+9:00 throughout January, April, July, and October, so the local clock in Tokyo does not shift seasonally. This consistency is one reason Japan is easier to schedule with than countries where offsets change twice a year.
Does AEST change during the year?
AEST itself is the standard time offset of UTC+10:00, so the label does not change on its own. The important detail is that some Australian regions, especially Queensland, remain on AEST year-round, while others such as New South Wales, Victoria, Tasmania, and the ACT move to AEDT (UTC+11:00) during daylight saving, typically from the first Sunday in October to the first Sunday in April.
What time works best for business calls between AEST and JST?
Because the gap is only 1 hour, there is broad overlap during normal office hours. A practical window is 10:00 AM to 4:00 PM AEST, which corresponds to 9:00 AM to 3:00 PM JST, making it suitable for sales calls, procurement meetings, university collaboration, and airline or shipping coordination. If one side is actually in Sydney during daylight saving, you should recalculate using AEDT, because the overlap shifts by an extra hour.
How do I convert AEST to JST for a meeting?
Start by subtracting 1 hour from AEST to get JST. For example, 2:30 PM AEST becomes 1:30 PM JST, and 9:00 AM AEST becomes 8:00 AM JST. On the xconvert grid, you can confirm this visually by dragging a purple selection across the AEST row and checking the aligned time block on the JST row.
Why does the AEST to JST difference sometimes seem wrong for Sydney?
The confusion usually happens because people say “AEST” when they really mean Sydney local time. Sydney uses AEST (UTC+10:00) only in the cooler part of the year, then switches to AEDT (UTC+11:00) during daylight saving, while Tokyo stays on JST (UTC+9:00) all year. So a Sydney-to-Tokyo comparison is 1 hour in winter but 2 hours in summer.
Is Brisbane the same as AEST when comparing with Japan?
Yes, Brisbane is one of the clearest real-world examples of AEST because Queensland does not observe daylight saving time. That means Brisbane remains on UTC+10:00 year-round, so the comparison with Tokyo is consistently 1 hour, which is useful for recurring meetings, freight coordination, and travel itineraries that span multiple months.