National Day of Costa Rica The National Day of Costa Rica is on the 15 September (Independence from Spain 1821) VN:F [1.9.22_1171]please wait...Rating: 0.0/10 (0 votes cast)VN:F [1.9.22_1171]Rating: 0 (from 0 votes) More from National DayNational Day of Guatemala National Day of HondurasNational Day of Nicaragua National Day of Mexico National Day of El Salvador National Day of Equatorial GuineaNational Day of EcuadorNational Day of Bolivia National Day of ArgentinaNational Day of Philippines Related Posts Northern Territory Public Holidays ( )NSW Public Holidays ( )Western Australia Public Holidays ( )Afganistan National Day ( )Albania National Day ( )Algeria National Day ( )Andorra National Day ( ) September 1, 2011 admin National Day Comments Off on National Day of Costa Rica