AEDT — Australian Eastern Daylight Time
AEDT is Australian Eastern Daylight Time, +11:00, used in Oceania. In code, use Australia/Sydney rather than the abbreviation.
Australian Eastern Daylight Time · Oceania
10:15:45
Thursday, 13 August 2026
- abbreviation denotes
- +11:00
- in force right now
- AEST (UTC+10:00)
- use in code
- Australia/Sydney
- next clock change
- 4 Oct 2026 03:00 → AEDT
Right now this zone is on AEST, not AEDT —
they are the same place at different times of year.
Use the IANA name, not the abbreviation
Python
from datetime import datetime
from zoneinfo import ZoneInfo
# right: an IANA zone carries the full history of rule changes
now = datetime.now(ZoneInfo("Australia/Sydney"))
print(now.isoformat(), now.tzname())
# wrong: an abbreviation is not resolvable, and a hard-coded offset
# silently rots the next time the rules change
# now = datetime.now(timezone(timedelta(hours=...))) # don'tAEDT questions
What does AEDT stand for?
AEDT is Australian Eastern Daylight Time, +11:00, used in Oceania. The IANA zone to use in code is Australia/Sydney.
What time is it in AEDT right now?
Australian Eastern Daylight Time: 10:15 on Thursday (AEST).
Which IANA timezone should I use instead of AEDT?
Australia/Sydney for Australian Eastern Daylight Time. Date libraries cannot resolve bare abbreviations, and an abbreviation carries no daylight-saving history, so a stored offset silently rots when a government changes the rules.
Why does my computer show AEST instead of AEDT?
Because Australia/Sydney is currently on AEST (UTC+10:00), its daylight-saving variant. AEDT (+11:00) applies during the other half of the year. Both names refer to the same place, one hour apart.