The following are national holidays in Paraguay
+ Fixed holidays: all holidays in Paraguay can be moved by presidential decree, but there has to be a presidential decree for such a change. The following holidays are the exception (dates are fixed and to not change): January 1st, May 15, December 8, December 15, Maundy Thursday and Good Friday.
Although not necessarily national holidays, the following are also holidays affecting important institutions:
References
Public holidays in Paraguay Wikipedia(Text) CC BY-SA