AoE is UTC−12. UK time (GMT and BST) is UTC+0 in winter and UTC+1 in summer, so it is 12 hours (winter) or 13 hours (summer) ahead of AoE. 23:59 AoE is 11:59 GMT in winter and 12:59 BST in summer, on the next day.
The common deadline times, worked out for UK time (GMT and BST). Both columns are shown because the answer depends on whether the deadline date falls in winter or summer.
| AoE time | Winter (GMT) | Summer (BST) |
|---|---|---|
| Midnight (00:00, 12:00 AM) | 12:00 GMT | 13:00 BST |
| 06:00 (6:00 AM) | 18:00 GMT | 19:00 BST |
| 12:00 (noon) | 00:00 GMT (next day) | 01:00 BST (next day) |
| 17:00 (5:00 PM) | 05:00 GMT (next day) | 06:00 BST (next day) |
| End of day (23:59, 11:59 PM) | 11:59 GMT (next day) | 12:59 BST (next day) |
GMT and UTC are the same time of day, but London is on BST (one hour ahead) in summer, so check which one the deadline date falls in.
UK time is GMT (UTC+0) from the last Sunday in October to the last Sunday in March and BST (UTC+1) the rest of the year.
11:59 GMT (UTC+0) in winter, and 12:59 BST (UTC+1) in summer, on the next day. Use the deadline's own date to pick the right one.
12:00 GMT in winter and 13:00 BST in summer, on the same day. Midnight AoE is the start of the deadline date, so it is the earliest the date can begin anywhere.
In winter, GMT is 12 hours ahead of AoE; in summer, BST is 13 hours ahead. AoE itself never changes: it is UTC−12 all year.
Yes, because UK clocks change and AoE does not. UK time is GMT (UTC+0) from the last Sunday in October to the last Sunday in March and BST (UTC+1) the rest of the year.
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.