Public holidays
1637, España, Castilla y León
| # | Date | Public holiday |
|---|---|---|
| 1 | Thursday, 1 January 1637 | New Year's Day |
| 2 | Tuesday, 6 January 1637 | Epiphany of the Lord |
| 3 | Thursday, 19 March 1637 | Saint Joseph's Day |
| 4 | Thursday, 9 April 1637 | Maundy Thursday |
| 5 | Friday, 10 April 1637 | Good Friday |
| 6 | Thursday, 23 April 1637 | Castile and Leon Day |
| 7 | Friday, 1 May 1637 | Labour Day |
| 8 | Saturday, 25 July 1637 | Saint James the Apostle |
| 9 | Saturday, 15 August 1637 | Assumption of the Virgin Mary |
| 10 | Sunday, 1 November 1637 | All Saints' Day |
| 11 | Sunday, 6 December 1637 | Spanish Constitution Day |
| 12 | Tuesday, 8 December 1637 | Immaculate Conception |
| 13 | Friday, 25 December 1637 | Nativity of the Lord |