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Tierra del Fuego, Argentina

Tierra del Fuego uses Argentina Time at UTC−3 throughout the year. Ushuaia, Río Grande, Tolhuin, and the province’s other communities share one clock, with no current daylight-saving adjustment.

Ushuaia, Argentina

Friday, 4 September 2026

UTC−3 · America/Argentina/Ushuaia

Time and sun data for Ushuaia — the largest city of Tierra del Fuego

The sun in Ushuaia

Sunrise 08:09 Solar noon 13:34 Sunset 18:58 Daylight 10 h 50 min Night 13 h 10 min Civil twilight 07:33 – 19:35

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Current time in Tierra del Fuego, Argentina

The same local time applies on both sides of the island’s Argentine road network. Travelers going between Río Grande, Tolhuin, and Ushuaia do not cross a time-zone boundary. The displayed hour also follows the same civil standard used in mainland Argentina.

To find Tierra del Fuego time from UTC, subtract three hours. If UTC reads 02:00 on Tuesday, the province reads 23:00 on Monday. That change of date is important for flights, remote meetings, and messages sent across continents.

At the end of the road, the clock is ordinary; the daylight is the part with dramatic timing.

One clock without a seasonal switch

The province’s time-zone abbreviation is ART, for Argentina Time. Its standard offset is UTC−3, and clocks are not currently changed in spring or autumn. Phones and computers with the correct regional setting should apply this offset automatically.

Ushuaia and Río Grande have identical civil time. Tolhuin requires no clock change when approached from either city. UTC is always three hours ahead under the current rule. Foreign time differences can change when another jurisdiction changes its clocks.

For travel documents, use the local departure and arrival times printed by the operator. For remote work, include the UTC offset so colleagues do not confuse Tierra del Fuego with another southern location governed by different rules.

Ushuaia, Río Grande, and southern daylight

Río Grande and Ushuaia are the province’s two principal cities, while Tolhuin is the smaller urban center between them. Their shared time zone should not obscure meaningful differences in sunrise caused by their distinct coordinates and surroundings.

At this high southern latitude, daylight changes markedly through the year. Summer mornings brighten early and evenings retain light for a long period. Winter provides a much shorter daylight window. Consequently, a remembered sunrise time becomes obsolete quickly as the season progresses.

Use a dated calculation for the exact city whenever natural light affects a hike, drive, boat trip, or photograph. Ushuaia’s mountainous horizon can also delay the first direct view of the Sun compared with a theoretical unobstructed horizon. Río Grande has different local terrain, so visible dawn conditions need not match those in Ushuaia even on a clear day.

Questions and answers
Does Ushuaia have a special southern time zone?
No. It uses Argentina Time, UTC−3, like the rest of the province.
Is Río Grande one hour different from Ushuaia?
No. Their official local clocks are identical.
Why does daylight vary so much in Tierra del Fuego?
Its far-southern latitude produces large seasonal changes in day length.

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