Public holidays
1664, España, País Vasco
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, 1 January 1664 | New Year's Day |
| 2 | Sunday, 6 January 1664 | Epiphany of the Lord |
| 3 | Wednesday, 19 March 1664 | Saint Joseph's Day |
| 4 | Thursday, 10 April 1664 | Maundy Thursday |
| 5 | Friday, 11 April 1664 | Good Friday |
| 6 | Monday, 14 April 1664 | Easter Monday |
| 7 | Thursday, 1 May 1664 | Labour Day |
| 8 | Friday, 25 July 1664 | Saint James the Apostle |
| 9 | Friday, 15 August 1664 | Assumption of the Virgin Mary |
| 10 | Saturday, 1 November 1664 | All Saints' Day |
| 11 | Saturday, 6 December 1664 | Spanish Constitution Day |
| 12 | Monday, 8 December 1664 | Immaculate Conception |
| 13 | Thursday, 25 December 1664 | Nativity of the Lord |