Public holidays
1999, USA, Massachusetts
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, January 1, 1999 | New Year's Day |
| 2 | Monday, January 18, 1999 | Martin Luther King Day |
| 3 | Monday, February 15, 1999 | Washington's Birthday/Susan B. Anthony Day |
| 4 | Monday, April 19, 1999 | Patriots' Day |
| 5 | Monday, May 31, 1999 | Memorial Day |
| Friday, June 18, 1999 | Juneteenth (observance) | |
| 6 | Saturday, June 19, 1999 | Juneteenth National Independence Day |
| 7 | Sunday, July 4, 1999 | Independence Day |
| Monday, July 5, 1999 | Independence Day (observance) | |
| 8 | Monday, September 6, 1999 | Labor Day |
| 9 | Monday, October 11, 1999 | Columbus Day |
| 10 | Thursday, November 11, 1999 | Veterans Day |
| 11 | Thursday, November 25, 1999 | Thanksgiving |
| Friday, December 24, 1999 | Christmas (observance)/Christmas Eve | |
| 12 | Saturday, December 25, 1999 | Christmas |
| Friday, December 31, 1999 | New Year's Day (observance) |