French Guiana operates on French Guiana Time (GFT) year-round, which is 3 hours behind Coordinated Universal Time (UTC-3). As an overseas department of France, French Guiana does not observe daylight saving time, so the time remains consistent throughout the year.
All of French Guiana follows the same timezone. Cayenne, the capital, and all other communes observe GFT. French Guiana shares the same timezone as Argentina, Brazil (Brasília time), Uruguay, and Suriname, but is 4 hours behind metropolitan France.
French Guiana is an overseas department of France and the only territory on the mainland South American continent that is part of the European Union. It's home to the Guiana Space Centre in Kourou, where the European Space Agency launches its Ariane rockets. About 98% of the territory is covered by equatorial rainforest.