Current time in the Antarctica/Rothera time zone

Antarctica/Rothera at a glance

UTC offset now	UTC−3
Standard time	UTC−3

How Antarctica/Rothera keeps time

This zone has a single offset, UTC−3, with no seasonal changes recorded since 1970.

Recent and upcoming changes in Antarctica/Rothera

Date	Change	New offset
Tuesday, November 30, 1976	Clocks go back 3 hours for good: 12:00 AM becomes 9:00 PM	UTC−3

The base offset of this zone changed in 1976, from UTC+0 to UTC−3. Old timestamps should be converted with the rule that applied at the time.

Countries and cities on Antarctica/Rothera

Antarctica/Rothera 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)	--:--	2 h behind	2 h behind	1 h behind
Los Angeles (United States)	--:--	5 h behind	5 h behind	4 h behind
London (United Kingdom)	--:--	3 h ahead	3 h ahead	4 h ahead
Paris (France)	--:--	4 h ahead	4 h ahead	5 h ahead
Dubai (United Arab Emirates)	--:--	7 h ahead	7 h ahead	7 h ahead
Mumbai (India)	--:--	8 h 30 min ahead	8 h 30 min ahead	8 h 30 min ahead
Singapore	--:--	11 h ahead	11 h ahead	11 h ahead
Tokyo (Japan)	--:--	12 h ahead	12 h ahead	12 h ahead
Sydney (Australia)	--:--	14 h ahead	14 h ahead	13 h ahead
UTC	--:--	3 h ahead	3 h ahead	3 h ahead

Other zones on UTC−3 right now

These IANA zones show the same time as Antarctica/Rothera today. Their clock-change rules may differ.

Using Antarctica/Rothera in software

Use the zone name Antarctica/Rothera 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/Rothera:

// JavaScript
new Intl.DateTimeFormat('en-GB', { timeZone: 'Antarctica/Rothera', timeStyle: 'long' }).format(new Date());
# Python
from datetime import datetime
from zoneinfo import ZoneInfo
datetime.now(ZoneInfo('Antarctica/Rothera'))
// PHP
(new DateTime('now', new DateTimeZone('Antarctica/Rothera')))->format('c');
# Shell
TZ=Antarctica/Rothera date

Plan around the time in Antarctica/Rothera

Convert a time to or from Antarctica/Rothera: pick a date and time and see it in every city on your list.
Add Antarctica/Rothera to your world clock to keep it next to your own time.
Find a meeting time that falls inside office hours in Antarctica/Rothera 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/Rothera?

UTC−3, 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.