101/01 New Year's Day 201/14 Julian Calendar New Year's Day 301/16* Martin Luther King Day (3rd Monday of January) 402/02 Groundhog Day 502/14 St. Valentine's Day 602/20* President's Day (3rd Monday of February) 703/05 Mother-in-Law Day 803/12* Daylight Savings Time begins; clocks move forward (2nd Sunday of March) 903/17 St. Patrick's Day 1003/20* Vernal Equinox 1104/01 April Fool's Day 1204/15 Income Tax Day 1304/22 Earth Day 1404/28* Arbor Day (varies from state to state) 1505/14* Mother's Day (2nd Sunday of May) 1605/20* Armed Forces Day (3rd Saturday of May) 1705/29* Memorial Day (Last Monday of May) 1806/18* Father's Day (3rd Sunday of June) 1906/21* Summer Solstice 2007/04 Independence Day 2109/04* Labor Day (1st Monday of September) 2209/10* Grandparent's Day (2nd Sunday of September; varies from state to state) 2309/22* Autumnal Equinox 2410/09* Columbus Day (2nd Monday of October) 2510/31 All Hallows Eve (Halloween) 2611/05* Daylight Savings Time ends; clocks move back (First Sunday in November) 2711/07* Election Day (1st Tuesday after 1st Monday) 2811/11 Veterans' Day 2911/23* Thanksgiving Day (Fourth Thursday in November) 3012/21* Winter Solstice 3112/24 Christmas Eve 3212/25 Christmas 3312/31 New Year's Eve 34