AoE to JST: convert Anywhere on Earth deadlines to Japan Standard Time (JST)
AoE is UTC−12. Japan Standard Time (JST) is UTC+9, so it is 21 hours ahead of AoE.
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Worked example: a deadline of Friday 14 May 2027, 23:59 AoE, is
- UTC: Sat 15 May 2027, 11:59 UTC
- US Pacific: Sat 15 May 2027, 04:59 GMT-7
- US Eastern: Sat 15 May 2027, 07:59 GMT-4
- London: Sat 15 May 2027, 12:59 BST
- India: Sat 15 May 2027, 17:29 GMT+5:30
- Sydney: Sat 15 May 2027, 21:59 GMT+10
The converter for your own date, time and time zone appears here in a moment.
How to use it
Enter the deadline
Type the date and time exactly as the call for papers gives it. Leave the time at 23:59 if it says end of day, AoE.
See it in your time
Your own time zone comes first, then the other main zones, with a live countdown.
Save or share it
Add it to your calendar with a reminder, or copy a link that opens with this deadline filled in.
23:59 AoE is 20:59 JST on the next day.
AoE to JST conversion table
The common deadline times, worked out for Japan Standard Time (JST).
| AoE time | In JST |
|---|---|
| Midnight (00:00, 12:00 AM) | 21:00 JST |
| 06:00 (6:00 AM) | 03:00 JST (next day) |
| 12:00 (noon) | 09:00 JST (next day) |
| 17:00 (5:00 PM) | 14:00 JST (next day) |
| End of day (23:59, 11:59 PM) | 20:59 JST (next day) |
How to convert AoE to JST by hand
- Take the deadline time as written, for example 23:59.
- Add 12 hours to get UTC. 23:59 AoE is 11:59 UTC the next day.
- Add Japan Standard Time (JST)'s offset, UTC+9.
- If the result passes 24:00, subtract 24 hours and move to the next calendar day.
Japan does not use daylight saving time, so the gap between AoE and JST is 21 hours all year. JST and KST are the same time of day.
AoE in other time zones
- AoE to IST
- AoE to EST
- AoE to PST
- AoE to UTC
- AoE to GMT
- AoE to CET
- AoE to KST
- AoE to SGT
- Any date, any time zone: the full converter
Guides that go with it
Frequently asked questions
What is 23:59 AoE in JST?
20:59 JST on the next day. AoE is UTC−12 and JST is UTC+9, so JST is 21 hours ahead of AoE.
What is midnight AoE (00:00, 12:00 AM) in JST?
21:00 JST on the same day. Midnight AoE is the start of the deadline date, so a deadline that says 00:00 AoE is a full day earlier than one that says 23:59 AoE.
How many hours ahead of AoE is JST?
21 hours, all year. AoE is UTC−12 and Japan Standard Time (JST) is UTC+9.
Does daylight saving time change AoE to JST?
No. AoE is a fixed UTC−12 and Japan Standard Time (JST) does not change its clocks, so the conversion is the same on every date.
What does AoE mean in a deadline?
AoE means Anywhere on Earth. The deadline passes only when the stated date has ended in every time zone, which happens last in UTC−12. If it is still the deadline date anywhere on Earth, you are on time.
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