calendar.usholiday revision 1.7
11.1Scgd01/01 New Year's Day 21.1Scgd01/14 Julian Calendar New Year's Day 31.7Sjnemeth01/16* Martin Luther King Day (3rd Monday of January) 41.1Scgd02/02 Groundhog Day 51.1Scgd02/14 St. Valentine's Day 61.7Sjnemeth02/20* President's Day (3rd Monday of February) 71.1Scgd03/05 Mother-in-Law Day 81.7Sjnemeth03/12* 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 141.7Sjnemeth04/28* Arbor Day (varies from state to state) 151.7Sjnemeth05/14* Mother's Day (2nd Sunday of May) 161.7Sjnemeth05/20* Armed Forces Day (3rd Saturday of May) 171.7Sjnemeth05/29* Memorial Day (Last Monday of May) 181.7Sjnemeth06/18* Father's Day (3rd Sunday of June) 191.7Sjnemeth06/21* Summer Solstice 201.1Scgd07/04 Independence Day 211.7Sjnemeth09/04* Labor Day (1st Monday of September) 221.6Sjnemeth09/10* Grandparent's Day (2nd Sunday of September; varies from state to state) 231.6Sjnemeth09/22* Autumnal Equinox 241.7Sjnemeth10/09* Columbus Day (2nd Monday of October) 251.1Scgd10/31 All Hallows Eve (Halloween) 261.7Sjnemeth11/05* Daylight Savings Time ends; clocks move back (First Sunday in November) 271.7Sjnemeth11/07* Election Day (1st Tuesday after 1st Monday) 281.1Scgd11/11 Veterans' Day 291.7Sjnemeth11/23* 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