Known as ‘feriados’, most public holidays are fixed in Argentina:

• January 1: New Year’s Day
• February/March: Carnival - the Monday and Tuesday before Ash Wednesday - February 12 and 13 in 2018; March 4 and 5 in 2019.
• April 2: Malvinas War Veterans Day
• Thursday before Easter ('Jueves Santo’) - March 29 in 2018; April 18 in 2019.
• Good Friday (‘Viernes Santo’) - March 30 in 2018; April 19 in 2019.
• May 1: Labour Day
• May 25: Revolution Day
• June 17: General Martín Manuel de Güemes Memorial Day
• June 20: General Belgrano Memorial Day (sometimes known as Flag Day, celebrating the creation of Argentina's national flag)
• July 9: Independence Day
• December 8: Day of the Immaculate Conception
• December 25: Christmas Day
   

For the following holidays, the day of the holiday moves to the Monday before if it falls on a Tuesday or Wednesday, or to the following Monday if it falls Thursday to Sunday:

• 17 August: San Martín Memorial Day
• 12 October: Columbus Day (officially, Day of Respect for Cultural Diversity)
• 20 November: National Sovereignty Day
   

A full list of public holidays in Argentina can be found here. Many businesses, and some museums and entertainment venues, close on these days, but it isn’t unusual for restaurants, bars and supermarkets to stay open. Public transport continues to run, even on Christmas Day, but at a reduced frequency.

School holidays in the summer run from the middle of December to the end of February, with another two weeks for winter holidays in July.