New Year's Day
Maundy Thursday
Good Friday
Labour Day
May Revolution Day
Flag Day
Independence Day
General José de San Martín Memorial Day
Day of Respect for Cultural Diversity
Immaculate Conception
Christmas Day
  January
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 ‹ 1865
1866
1867 › 
# Date Public holiday
1Monday, 1 January 1866 New Year's Day
2Thursday, 29 March 1866 Maundy Thursday
3Friday, 30 March 1866 Good Friday
4Tuesday, 1 May 1866 Labour Day
5Friday, 25 May 1866 May Revolution Day
6Monday, 18 June 1866 Flag Day
7Monday, 9 July 1866 Independence Day
8Monday, 20 August 1866 General José de San Martín Memorial Day
9Monday, 15 October 1866 Day of Respect for Cultural Diversity
10Saturday, 8 December 1866 Immaculate Conception
11Tuesday, 25 December 1866 Christmas Day