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Mendoza, Argentina

Mendoza keeps Argentina Time, corresponding to UTC−3. The same clock applies throughout the province, from the capital area to towns near the Andes, although local sunlight varies by date and terrain.

Ciudad de Las Heras, Argentina

Saturday, 5 September 2026

UTC−3 · America/Argentina/Mendoza

Time and sun data for Ciudad de Las Heras — the largest city of Mendoza

The sun in Ciudad de Las Heras

Sunrise 7:49 AM Solar noon 1:35 PM Sunset 7:22 PM Daylight 11 h 33 min Night 12 h 27 min Civil twilight 7:24 AM – 7:47 PM

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Current time in Mendoza, Argentina

ART is three hours behind Coordinated Universal Time. Subtract three hours from UTC to obtain Mendoza’s official time. There is currently no daylight-saving clock change, making the conversion stable across the calendar.

Mendoza time agrees with Buenos Aires time. Travelling domestically does not require a watch adjustment, but crossing the international border can introduce different rules. For calls or onward travel involving Chile, verify the destination’s current offset for the relevant date. An Andean sunset can look fashionably late even when the clock is perfectly punctual.

Major cities on one clock

Greater Mendoza is the province’s largest urban concentration and includes the capital alongside neighbouring departments. Other major centres include San Rafael, Godoy Cruz, Guaymallén, Las Heras and Maipú. Every locality in Mendoza province uses the national time.

The shared clock helps with provincial travel, yet city labels deserve attention. “Mendoza” can mean the capital city, the broader metropolitan area or the province itself. A time-zone answer is identical for all three, while a sunrise calculation should use a specific coordinate.

Mendoza city: provincial capital and core of the metropolitan area. Godoy Cruz, Guaymallén and Las Heras: large components of Greater Mendoza. Maipú: a significant urban and agricultural centre. San Rafael: a major city in southern Mendoza.

Andes, sunrise and evening light

Sunrise and sunset move with the seasons. Longer summer daylight and shorter winter daylight occur without any clock adjustment. Mendoza’s western location within Argentina also shapes how solar time relates to the national clock.

The Andes dominate the western horizon in much of the province. They can cause direct sunlight to disappear before the calculated astronomical sunset for a level horizon. Eastern obstructions, buildings and local relief can likewise influence when morning sunlight first reaches an observer.

Use a date-specific result for the nearest city when timing vineyard visits, mountain travel or photography. In high country, distinguish the formal sunset from the moment the Sun passes behind a ridge. Weather and deep valleys can shorten the period of direct visible light still further.

Questions and answers

What is Mendoza’s UTC offset?
Mendoza uses UTC−3, the offset for Argentina Time.
Do clocks change between summer and winter?
No. Mendoza does not currently observe daylight saving time, although sunrise and sunset still move seasonally.
Is San Rafael in the same time zone as Mendoza city?
Yes. Both use ART. Their solar-event times can differ because they occupy different positions within the province.
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