Antarctica/Casey at a glance
| UTC offset now | UTC+8 |
|---|---|
| Standard time | UTC+8 |
How Antarctica/Casey keeps time
This zone has a single offset, UTC+8, with no seasonal changes recorded since 1970.
Recent and upcoming changes in Antarctica/Casey
| Date | Change | New offset |
|---|---|---|
| Sunday, October 3, 2021 | Standard offset changes from UTC+8 to UTC+11 | UTC+11 |
| Saturday, March 12, 2022 | Clocks go back 3 hours: 12:00 AM becomes 9:00 PM | UTC+8 |
| Sunday, October 2, 2022 | Standard offset changes from UTC+8 to UTC+11 | UTC+11 |
| Thursday, March 9, 2023 | Clocks go back 3 hours for good: 3:00 AM becomes 12:00 AM | UTC+8 |
The base offset of this zone changed in 2023, from UTC+11 to UTC+8. Old timestamps should be converted with the rule that applied at the time.
Countries and cities on Antarctica/Casey
Antarctica/Casey compared with other time zones
Differences change during the year when one side moves to or from daylight saving time, so the table shows January and July separately.
| City | Time now | Difference now | In January | In July |
|---|---|---|---|---|
| New York (United States) | --:-- | 13 h behind | 13 h behind | 12 h behind |
| Los Angeles (United States) | --:-- | 16 h behind | 16 h behind | 15 h behind |
| London (United Kingdom) | --:-- | 8 h behind | 8 h behind | 7 h behind |
| Paris (France) | --:-- | 7 h behind | 7 h behind | 6 h behind |
| Dubai (United Arab Emirates) | --:-- | 4 h behind | 4 h behind | 4 h behind |
| Mumbai (India) | --:-- | 2 h 30 min behind | 2 h 30 min behind | 2 h 30 min behind |
| Singapore | --:-- | Same time | Same time | Same time |
| Tokyo (Japan) | --:-- | 1 h ahead | 1 h ahead | 1 h ahead |
| Sydney (Australia) | --:-- | 3 h ahead | 3 h ahead | 2 h ahead |
| UTC | --:-- | 8 h behind | 8 h behind | 8 h behind |
Other zones on UTC+8 right now
These IANA zones show the same time as Antarctica/Casey today. Their clock-change rules may differ.
- Asia/Brunei
- Asia/Hong_Kong
- Asia/Irkutsk
- Asia/Kuala_Lumpur
- Asia/Kuching
- Asia/Macau
- Asia/Makassar
- Asia/Manila
- Asia/Shanghai
- Asia/Singapore
- Asia/Taipei
- Asia/Ulaanbaatar
Using Antarctica/Casey in software
Use the zone name Antarctica/Casey rather than an abbreviation or a fixed offset. Abbreviations can mean several zones, and offsets ignore future clock changes.
Show the current time in Antarctica/Casey:
// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'Antarctica/Casey', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('Antarctica/Casey'))
// PHP
(new DateTime('now', new DateTimeZone('Antarctica/Casey')))->format('c');
# Shell
TZ=Antarctica/Casey datePlan around the time in Antarctica/Casey
- Convert a time to or from Antarctica/Casey: pick a date and time and see it in every city on your list.
- Add Antarctica/Casey to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Antarctica/Casey and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What is the UTC offset of Antarctica/Casey?
UTC+8, all year.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.