The following is a list of holidays for 2021 which are recognized by Solano Irrigation District and the dates they will be observed:
| New Year's Day |
Friday, January 1 |
| President's Day |
Monday, February 15 |
| Memorial Day |
Monday, May 31 |
| Independence Day |
Monday, July 5 |
| Labor Day |
Monday, September 6 |
| Columbus Day |
Monday, October 11 |
| Thanksgiving Day |
Thursday, November 25 |
| Day after Thanksgiving |
Friday, November 26 |
| Christmas Eve |
Friday, December 24 |
| Christmas Day |
Monday, December 27 |
| New Year's Eve |
Friday, December 31 |