Public holidays
1966, USA, Massachusetts
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, January 1, 1966 | New Year's Day |
| 2 | Tuesday, February 22, 1966 | Washington's Birthday/Mardi gras day |
| 3 | Monday, April 18, 1966 | Patriots' Day |
| 4 | Monday, May 30, 1966 | Memorial Day |
| 5 | Monday, July 4, 1966 | Independence Day |
| 6 | Monday, September 5, 1966 | Labor Day |
| 7 | Wednesday, October 12, 1966 | Columbus Day |
| 8 | Friday, November 11, 1966 | Veterans Day |
| 9 | Thursday, November 24, 1966 | Thanksgiving |
| 10 | Sunday, December 25, 1966 | Christmas |
| Monday, December 26, 1966 | Christmas (observance) |