| Date | Holiday | Type |
| January 2019 | ||
| Jan 1 – Tues | New Year’s Day 2019 | National holiday |
| Jan 6 – Sun | Epiphany 2019 | Christian |
| Jan 7 – Mon | Orthodox Christmas Day 2019 | Orthodox Christian |
| Jan 14 – Mon | Orthodox New Year 2019 | Orthodox Christian |
| Jan 15 – Tues | Makar Sankranti 2019 | Hindu |
| Jan 21 – Mon | Tu B’Shevat 2019 | Jewish |
| Jan 21 – Mon | Martin Luther King Day 2019 | National holiday |
| February 2019 | ||
| Feb 1 – Fri | National Freedom Day 2019 | Observance |
| Feb 1 – Fri | National Wear Red Day 2019 | Observance |
| Feb 2 – Sat | Groundhog Day 2019 | Observance |
| Feb 5 – Tues | Chinese New Year 2019 | Observance |
| Feb 12 – Tues | Lincoln’s Birthday 2019 | Observance |
| Feb 14 – Thurs | Valentine’s Day 2019 | Observance |
| Feb 18 – Mon | Presidents’ Day – Washington’s Birthday 2019 | National holiday |
| March 2019 | ||
| Mar 1 – Fri | Read Across America Day 2019 | Observance |
| Mar 1 – Fri | Employee Appreciation Day 2019 | Observance |
| Mar 5 – Tues | Maha Shivaratri 2019 | Hindu |
| Mar 5 – Tues | Mardi Gras 2019 | Christian |
| Mar 6 – Wed | Lent 2019 | Christian |
| Mar 6 – Wed | Ash Wednesday 2019 | Christian |
| Mar 10 – Sun | Daylight Saving Time – begins 2019 | Daylight Saving |
| Mar 17 – Sun | St. Patrick’s Day 2019 | Observance |
| Mar 20 – Wed | Spring/Fall – March equinox 2019 | Season |
| Mar 21 – Thur | Purim 2019 | Jewish |
| Mar 21 – Thurs | Holi 2019 | Hindu |
| April 2019 | ||
| Apr 1 – Mon | April Fools’ Day 2019 | Observance |
| Apr 3 – Wed | Isra and Mi’raj 2019 | Muslim |
| Apr 13 – Sat | Thomas Jefferson Birthday 2019 | Observance |
| Apr 14 – Sun | Rama Navami 2019 | Hindu |
| Apr 14 -Sun | Palm Sunday 2019 | Christian |
| Apr 15 – Mon | Tax Day 2019 | Observance |
| Apr 16 – Tues | National Library Workers Day 2019 | Observance |
| Apr 18 – Thurs | Maundy Thursday 2019 | Christian |
| Apr 19 – Fri | Good Friday 2019 | Christian |
| Apr 20 – Sat | Holy Saturday 2019 | Christian |
| Apr 20 – Sat | Passover – Starts 2019 | Jewish |
| Apr 21 – Sun | Laylat al Bara’at 2019 | Muslim |
| Apr 21 – Sun | Easter 2019 | Christian |
| Apr 21 – Sun | Earth Day 2019 | Observance |
| Apr 22 – Mon | Easter Monday 2019 | Christian |
| Apr 24 – Wed | Administrative Professionals Day 2019 | Observance |
| Apr 25 – Thurs | Take our Daughters and Sons to Work Day 2019 | Observance |
| Apr 26 – Fri | Orthodox Good Friday 2019 | Orthodox Christian |
| Apr 26 – Fri | Arbor Day 2019 | Observance |
| Apr 27 – Sat | Passover – Final Day 2019 | Jewish |
| Apr 28 – Sun | Orthodox Easter 2019 | Orthodox Christian |
| May 2019 | ||
| May 1 – Wed | May Day 2019 | Observance |
| May 2 – Thur | Yom Hashoah 2019 | Jewish |
| May 2 – Thurs | National Day of Prayer 2019 | Observance |
| May 5 – Sun | Cinco de Mayo 2019 | Observance |
| May 6 – Mon | National Nurses Day 2019 | Observance |
| May 6 – Mon | Ramadan starts 2019 | Muslim |
| May 12 – Sun | Mothers’ Day 2019 | Observance |
| May 15 – Wed | Peace Officers Memorial Day 2019 | Observance |
| May 18 – Sat | Armed Forces Day 2019 | Observance |
| May 22 – Wed | National Maritime Day 2019 | Observance |
| May 23 – Thurs | Lag BaOmer 2019 | Jewish |
| May 27 – Mon | Memorial Day 2019 | National holiday |
| May 30 – Thurs | Ascension Day 2019 | Christian |
| June 2019 | ||
| Jun 1 – Sat | Laylat al Qadr 2019 | Muslim |
| Jun 5 – Wed | Eid al-Fitr 2019 | Muslim |
| Jun 6 – Thurs | D-Day 2019 | Observance |
| Jun 9 – Sun | Shavuot 2019 | Jewish |
| Jun 9 – Sun | Pentecost 2019 | Christian |
| Jun 10 – Mon | Whit Monday 2019 | Christian |
| Jun 14 – Fri | Flag Day 2019 | Observance |
| Jun 16 – Sun | Fathers’ Day 2019 | Observance |
| Jun 20 – Thurs | Corpus Christi 2019 | Christian |
| Jun 21 – Fri | Summer/Winter Solstice 2019 | Season |
| July 2019 | ||
| Jul 4 – Thurs | Rath Yatra 2019 | Hindu |
| Jul 4 – Thurs | 4th of July – Independence Day 2019 | National holiday |
| Jul 28 – Sun | Parents Day 2019 | Observance |
| August 2019 | ||
| Aug 4 – Sun | Friendship Day 2019 | Observance |
| Aug 11 – Sun | Day of Arafat 2019 | Muslim |
| Aug 11 – Sun | Tisha B’Av 2019 | Jewish |
| Aug 11 – Sun | Eid al-Adha 2019 | Muslim |
| Aug 14 – Wed | Raksha Bandhan 2019 | Hindu |
| Aug 15 – Thurs | Assumption of Mary 2019 | Christian |
| Aug 19 – Mon | National Aviation Day 2019 | Observance |
| Aug 21 – Wed | Senior Citizens Day 2019 | Observance |
| Aug 23 – Fri | Krishna Janmashtami 2019 | Hindu |
| Aug 26 – Mon | Women’s Equality Day 2019 | Observance |
| Aug 31 – Sat | Muharram 2019 | Muslim |
| September 2019 | ||
| Sept 2 – Mon | Ganesh Chaturthi 2019 | Hindu |
| Sep 2 – Mon | Labor Day 2019 | National holiday |
| Sep 8 – Sun | National Grandparents Day 2019 | Observance |
| Sep 10 – Tues | Ashura 2019 | Muslim |
| Sep 11 – Wed | Patriot Day 2019 | Observance |
| Sep 17 – Tues | Constitution Citizenship Day 2019 | Observance |
| Sep 23 – Mon | Fall/ Spring – September equinox 2019 | Season |
| Sept 29 – Sun | Navratri 2019 | Hindu |
| Sept 30 – Mon | Rosh Hashana 2019 | Jewish |
| October 2019 | ||
| Oct 7 – Mon | Child Health Day 2019 | Observance |
| Oct 7 – Mon | Dussehra 2019 | Hindu |
| Oct 9 – Wed | Leif Erikson 2019 | Observance |
| Oct 9 – Wed | Yom Kippur 2019 | Jewish |
| Oct 14 – Mon | Sukkot 2019 | Jewish |
| Oct 14 – Mon | Columbus Day 2019 | National holiday |
| Oct 16 – Wed | Boss’s Day 2019 | Observance |
| Oct 21 – Mon | Shemini Atzeret 2019 | Jewish |
| Oct 22 – Tues | Simchat Torah 2019 | Jewish |
| Oct 27 – Sun | Diwali 2019 | Hindu |
| Oct 31 – Thurs | Halloween 2019 | Observance |
| November 2019 | ||
| Nov 1 – Fri | All Saints’ Day 2019 | Christian |
| Nov 2 – Fri | All Souls Day 2019 | Christian |
| Nov 3 – Sun | Daylight Saving Time – ends 2019 | Daylight Saving |
| Nov 10 – Sun | The Prophet’s Birthday 2019 | Muslim |
| Nov 11 – Mon | Veterans Day 2019 | National holiday |
| Nov 28 – Thurs | Thanksgiving Day 2019 | National holiday |
| Nov 29 – Fri | Black Friday 2019 | Observance |
| December 2019 | ||
| Dec 2 – Mon | Cyber Monday 2019 | Observance |
| Dec 1 – Sun | Advent 2019 | Christian |
| Dec 6 – Fri | St Nicholas Day 2019 | Christian |
| Dec 7 – Sat | Pearl Harbor Remebrance Day 2019 | Observance |
| Dec 17 – Tues | Wright Brothers Day 2019 | Observance |
| Dec 22 – Sun | Winter/Summer Solstice 2019 | Season |
| Dec 23 – Mon | Hanukkah/Chanukah – Starts 2019 | Jewish |
| Dec 24 – Tues | Christmas Eve 2019 | Christian |
| Dec 25 – Wed | Christmas Day 2019 | National holiday |
| Dec 26 – Thurs | Kwanzaa -thru Jan 1 2019 | Observance |
| Dec 30 – Mon | Hanukkah/Chanukah – Final Day 2019 | Jewish |
| Dec 31 – Tues | New Years Eve 2019 | Observance |
