Public holidays
1666, Ecuador
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1666 | Año Nuevo |
| 2 | Monday, 1 March 1666 | Lunes de Carnaval |
| 3 | Tuesday, 2 March 1666 | Martes de Carnaval |
| 4 | Friday, 16 April 1666 | Viernes Santo |
| 5 | Friday, 30 April 1666 | Día del Trabajo |
| 6 | Monday, 24 May 1666 | Batalla de Pichincha |
| 7 | Monday, 9 August 1666 | Primer Grito de la Independencia |
| 8 | Friday, 8 October 1666 | Independencia de Guayaquil |
| 9 | Monday, 1 November 1666 | Día de los Difuntos |
| 10 | Friday, 5 November 1666 | Independencia de Cuenca |
| 11 | Saturday, 25 December 1666 | Navidad |