1977 Holidays
| Holidays 1977 | Week Day | Date |
| New Year's Day (Observed) | Friday | December 31, 1976 |
| New Year's Day | Saturday | January 1, 1977 |
| Epiphany | Thursday | January 6, 1977 |
| Martin Luther King Jr's Day | Monday | January 17, 1977 |
| Inauguration Day | Thursday | January 20, 1977 |
| Ground Hog Day | Wednesday | February 2, 1977 |
| Valentine's Day | Monday | February 14, 1977 |
| President's Day | Monday | February 21, 1977 |
| Ash Wednesday | Wednesday | February 23, 1977 |
| Saint Patrick's Day | Thursday | March 17, 1977 |
| Palm Sunday | Sunday | April 3, 1977 |
| Good Friday | Friday | April 8, 1977 |
| Easter | Sunday | April 10, 1977 |
| Easter Monday | Monday | April 11, 1977 |
| Income Tax Day | Friday | April 15, 1977 |
| Earth Day | Friday | April 22, 1977 |
| Arbor Day | Friday | April 29, 1977 |
| Cinco de Mayo | Thursday | May 5, 1977 |
| Mother's Day | Sunday | May 8, 1977 |
| National Maritime Day | Sunday | May 22, 1977 |
| National Missing Children's Day | Wednesday | May 25, 1977 |
| Memorial Day | Monday | May 30, 1977 |
| D-Day | Monday | June 6, 1977 |
| Flag Day | Tuesday | June 14, 1977 |
| Father's Day | Sunday | June 19, 1977 |
| Independence Day | Monday | July 4, 1977 |
| Labor Day | Monday | September 5, 1977 |
| Grandparent's Day | Sunday | September 11, 1977 |
| Patriot Day | Sunday | September 11, 1977 |
| Columbus Day | Monday | October 10, 1977 |
| Halloween | Monday | October 31, 1977 |
| All Saints' Day | Tuesday | November 1, 1977 |
| All Souls' Day | Wednesday | November 2, 1977 |
| Election Day | Tuesday | November 8, 1977 |
| Veteran's Day | Friday | November 11, 1977 |
| Thanksgiving Day | Thursday | November 24, 1977 |
| Black Friday | Friday | November 25, 1977 |
| Cyber Monday | Monday | November 28, 1977 |
| Pearl Harbor Day | Wednesday | December 7, 1977 |
| Feast of the Immaculate Conception | Thursday | December 8, 1977 |
| Christmas Eve | Saturday | December 24, 1977 |
| Christmas Day | Sunday | December 25, 1977 |
| Christmas Day (Observed) | Monday | December 26, 1977 |
| New Year's Eve | Saturday | December 31, 1977 |