| CITY | LOCAL TIME | Difference | Coming up |
|---|---|---|---|
| London United Kingdom | 01:00Thu | +4h | Becomes +3h on 25 Oct |
| Berlin Germany | 02:00Thu | +5h | Becomes +4h on 25 Oct |
| Dubai UAE | 04:00Thu | +7h | |
| Tokyo Japan | 09:00Thu | +12h | |
| Sydney Australia | 10:00Thu | +13h | Becomes +14h on 4 Oct |
| New York United States | 20:00 | −1h | Becomes −2h on 1 Nov |
| Los Angeles United States | 17:00 | −4h | Becomes −5h on 1 Nov |
Rosario, Argentina runs on UTC−3. This time zone stays fixed year-round at UTC−3 — daylight saving time is not observed. The time difference between Rosario and New York is 1 hour. Standard 9-to-6 working hours overlap for about 8 hours a day with New York. A good time to connect: 10:00–18:00 in Rosario lines up with 09:00–17:00 in New York. The time difference between Rosario and London is 4 hours. Standard 9-to-6 working hours overlap for about 5 hours a day with London. A good time to connect: 09:00–14:00 in Rosario lines up with 13:00–18:00 in London. The time difference between Rosario and Tokyo is 12 hours. Standard working hours don't overlap at all with Tokyo, so meetings need an early or late slot on one side. This timezone is also shared with cities such as Buenos Aires, São Paulo, Rio de Janeiro. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Rosario.
Rosario (Argentina) is home to roughly 1.3M people. Today brings about 12.4 hours of daylight: sunrise at 06:41, sunset at 19:04. This time zone stays fixed year-round at UTC−3 — daylight saving time is not observed. It sits in the Southern Hemisphere, about 33° south of the equator. Traffic drives on the right.
Flag
Argentina
Capital
Buenos Aires
Continent
South America
Time Zone
UTC−3 · America/Argentina/Buenos_Aires
Coordinates
32.95°S, 60.64°W
Currency
ARS ($)
Calling Code
+54
Driving Side
Right
Hemisphere
Southern
Language
Spanish
Measurement System
Metric
Did You Know?
Manuel Belgrano first raised the Argentine flag on the banks of the Paraná at Rosario in February 1812, and the national flag memorial there is a 70-metre monument. The city has also produced a striking share of the country's footballers.
The clock: Rosario keeps UTC−3. Its grain port handles a large majority of Argentina's soy and maize exports.
Rosario lies at 60.6°W. Its time zone, UTC−3, is built around the 45°W meridian. The 15.6° gap between them means the clock runs roughly 63 minutes ahead of the sun: solar noon arrives at about 13:03 rather than 12:00. The zone holds UTC−3 all year — there is no daylight saving here.
The longest day of 2026 is 22 December, with 14h 20m of daylight. The shortest is 22 June, with 9h 58m. The swing between them is 4h 21m. At this latitude the seasons are visible in the clock, but never dramatic.
The earliest sunrise and the latest sunset do not land on the longest day. In Rosario the sun comes up earliest on 6 December at 05:47, while the latest sunset waits until 8 January at 20:15. The equation of time is what separates them: the Earth's elliptical orbit and axial tilt move solar noon back and forth by several minutes over the year.
The sky stays usably light for a while after the sun goes down. In Rosario that civil twilight runs about 25 minutes at the equinox.
Every figure in this section is computed from the city's own latitude, longitude and IANA time zone using NOAA solar algorithms (Spencer, 1971), accurate to about ±2 arcminutes below 65° latitude.
The official timezone for Rosario, Argentina is America/Argentina/Buenos_Aires with a current UTC offset of UTC−3.
Rosario has an estimated population of 1.3M and is located at coordinates 32.95°S, 60.64°W.
Rosario gets 14h 20m of daylight on its longest day and 9h 58m on its shortest, averaging 12h 6m a day across the year.
Solar noon in Rosario falls at about 13:03 on UTC−3 standard time, because the city sits 15.6° from the meridian its zone is built on.
Where the Flag Was First Raised: Manuel Belgrano first raised the Argentine flag on the banks of the Paraná at Rosario in February 1812, and the national flag memorial there is a 70-metre monument.