New Year’s Day |
January 1 |
Good Friday and Easter Monday |
March/April (according to the Church calendar) |
Labour Day (International Workers’ Day) |
May 1 |
Declaration of the Restoration of Independence Day |
May 4 |
Mother’s Day (not a Public Holiday) |
2nd Sunday in May |
Midsummer Celebrations (Līgo evening and Jāņi) |
June 23 – 24 |
Father’s Day (not a Public Holiday) |
2nd Sunday in September |
National Day (Proclamation of the Republic of Latvia) |
November 18 |
Christmas |
December 24 – 26 |
New Year’s Eve |
January 1 |
Additional descriptions and information about the holidays: 
https://www.latvia.eu/
https://www.onlatvia.com/
https://www.latvia.travel/en
https://www.officeholidays.com/countries/latvia/2020