calendar.usholiday revision 1.10
11.1Scgd01/01 New Year's Day 21.1Scgd01/14 Julian Calendar New Year's Day 31.10Sjnemeth01/20* Martin Luther King Day (3rd Monday of January) 41.1Scgd02/02 Groundhog Day 51.1Scgd02/14 St. Valentine's Day 61.10Sjnemeth02/17* President's Day (3rd Monday of February) 71.1Scgd03/05 Mother-in-Law Day 81.10Sjnemeth03/08* Daylight Savings Time begins; clocks move forward (2nd Sunday of March) 91.1Scgd03/17 St. Patrick's Day 101.1Scgd03/20* Vernal Equinox 111.1Scgd04/01 April Fool's Day 121.1Scgd04/15 Income Tax Day 131.5Ssnj04/22 Earth Day 141.10Sjnemeth04/24* Arbor Day (varies from state to state) 151.10Sjnemeth05/10* Mother's Day (2nd Sunday of May) 161.10Sjnemeth05/16* Armed Forces Day (3rd Saturday of May) 171.10Sjnemeth05/31* Memorial Day (Last Monday of May) 181.10Sjnemeth06/21* Father's Day (3rd Sunday of June) 191.10Sjnemeth06/20* Summer Solstice 201.1Scgd07/04 Independence Day 211.10Sjnemeth09/07* Labor Day (1st Monday of September) 221.10Sjnemeth09/06* Grandparent's Day (2nd Sunday of September; varies from state to state) 231.10Sjnemeth09/22* Autumnal Equinox 241.10Sjnemeth10/12* Columbus Day (2nd Monday of October) 251.1Scgd10/31 All Hallows Eve (Halloween) 261.10Sjnemeth11/01* Daylight Savings Time ends; clocks move back (First Sunday in November) 271.10Sjnemeth11/10* Election Day (1st Tuesday after 1st Monday) 281.1Scgd11/11 Veterans' Day 291.10Sjnemeth11/26* Thanksgiving Day (Fourth Thursday in November) 301.7Sjnemeth12/21* Winter Solstice 311.1Scgd12/24 Christmas Eve 321.1Scgd12/25 Christmas 331.1Scgd12/31 New Year's Eve 34