Paraguay operates on Paraguay Time (PYT) during winter months, which is 4 hours behind Coordinated Universal Time (UTC-4). During daylight saving time, observed from the first Sunday in October to the fourth Sunday in March, Paraguay switches to Paraguay Summer Time (PYST), which is UTC-3.
All of Paraguay follows the same timezone. Major cities including Asunción (the capital), Ciudad del Este, San Lorenzo, and Luque all observe PYT/PYST. During summer, Paraguay aligns with Argentina, Brazil, and Uruguay's timezone.
Paraguay is one of only two landlocked countries in South America. The country is bilingual, with both Spanish and Guaraní as official languages. The Itaipu Dam on the Paraguay-Brazil border is one of the world's largest hydroelectric power plants, providing about 75% of Paraguay's electricity and 17% of Brazil's.