Closings and Holidays
2021
| January 1, 2021 | Friday | New Year’s Day | Closed all day |
| January 18, 2021 | Monday | Martin Luther King Jr. Day | Closed all day |
| February 15, 2021 | Monday | Presidents' Day | Closed all day |
| April 4, 2021 | Sunday | Easter Sunday | Closed all day |
| May 9, 2021 | Sunday | Mother's Day | Closed all day |
| May 30, 2021 | Sunday | Memorial Day Weekend | Closed all day |
| May 31, 2021 | Monday | Memorial Day | Closed all day |
| July 4, 2021 | Sunday | Independence Day | Closed all day |
| July 5, 2021 | Monday | Independence Day Observed | Closed all day |
| September 6, 2021 | Monday | Labor Day | Closed all day |
| September 10, 2021 | Friday | East Northport Festival | East Northport Building closes at 5 PM |
| September 11, 2021 | Saturday | East Northport Festival | East Northport Building closed all day |
| September 18, 2021 | Saturday | Cow Harbor Race Day | Northport Building opens at 12 Noon |
| October 3, 2021 | Sunday | Resume Sunday Openings | Open 1-5 |
| October 11, 2021 | Monday | Columbus Day | Closed all day |
| November 11, 2021 | Thursday | Veterans Day | Closed all day |
| November 24, 2021 | Wednesday | Thanksgiving Eve | Closed at 5 PM |
| November 25, 2021 | Thursday | Thanksgiving Day | Closed all day |
| December 24, 2021 | Friday | Christmas Eve Day | Closed all day |
| December 25, 2021 | Saturday | Christmas Day | Closed all day |
| December 31, 2021 | Friday |
New Year's Eve | Closed all day |
2022
| January 1, 2022 | Saturday | New Year’s Day | Closed all day |
| January 17, 2022 | Monday | Martin Luther King Jr. Day | Closed all day |
| February 21, 2022 | Monday | Presidents' Day | Closed all day |
| April 17, 2022 | Sunday | Easter Sunday | Closed all day |
| May 8, 2022 | Sunday | Mother's Day | Closed all day |
| May 29, 2022 | Sunday | Memorial Day Weekend | Closed all day |
| May 30, 2022 | Monday | Memorial Day | Closed all day |
| June 19, 2022 | Sunday | Juneteenth | Closed all day |
| June 20, 2022 | Monday | Juneteenth (Observed) | Closed all day |
| June 26, 2022 | Sunday | Begin Sunday Closings | Closed all day |
| July 4, 2022 | Monday | Independence Day | Closed all day |
| September 5, 2022 | Monday | Labor Day | Closed all day |
| October 2, 2022 | Sunday | Resume Sunday Openings | Open 1-5 |
| October 10, 2022 | Monday | Columbus Day | Closed all day |
| November 11, 2022 | Friday | Veterans' Day | Closed all day |
| November 23, 2022 | Wednesday | Thanksgiving Eve | Closed at 5 PM |
| November 24, 2022 | Thursday | Thanksgiving Day | Closed all day |
| December 24, 2022 | Saturday | Christmas Eve Day | Closed all day |
| December 25, 2022 | Sunday | Christmas Day | Closed all day |
| December 26, 2022 | Monday | Christmas Day (Observed) | Closed all day |
| December 31, 2022 | Saturday |
New Year's Eve | Closed all day |