We have made every effort to assure that the dates below are correct Winter 2011 New Year's Day: January 1 Three Kings Day (Dia de los Santos Reyes): January 6 Martin Luther King, Jr's Birthday: Monday, January 17 Groundhog Day: February 02 Lincoln's Birthday: February 12 Valentine's Day: February 14 President's Day: Monday, February 21 Washington's Birthday: February 22 Mardi Gras: March 08 Ash Wednesday: March 09 Purim (Begins at Sundown*): March 19 St. Patrick's Day: March 17 Spring 2011 Spring: March 20 Baha'i New Year (Naw Ruz): March 21 April Fool's Day: April 01 Palm Sunday: Sunday, April 17 Passover (Begins at Sundown*): April 18 Good Friday: April 22 Easter: Sunday, April 24 Eastern Orthodox Easter: Sunday, April 24 Yom Ha Shoah (Holocaust Remembrance Day) (Begins at Sundown*): April 30 Earth Day: April 22 Cinco de Mayo: May 5 Mother's Day: Sunday, May 08 Declaration of the Báb (Baha'i holiday): May 23 Ascension of Baha'u'llah (Baha'i holiday): May 29 Memorial Day: Monday, May 30 Shavuot (Begins at Sundown*): June 07 Flag Day: June 14 Juneteenth: June 19 Father's Day: Sunday, June 19 Summer 2011 Summer : June 21 US Independence Day: July 04 Martyrdom of the Bab (Baha'i holiday): July 09 Ramadan: August 01 (Depends on the sighting of the moon in North America) Eid al-Fitr: August 29 (Depends on the sighting of the moon in North America) Labor Day: Monday, September 05 Grandparents Day: September 11 Fall 2011 Fall / Autumn : September 23 Rosh Hashanah (Begins at Sundown*): September 28 Yom Kippur (Begins at Sundown*): October 07 Sukkot (Begins at Sundown*): October 12 Columbus Day (observed): October 10 Birth of the Bab (Baha'i holiday): October 20 Diwali: October 26 Halloween: October 31 Dia de los Muertos (Day of the Dead): November 1 All Saint's Day: November 1 All Soul's Day: November 2 Veterans Day: November 11 Birth of Baha'u'llah (Baha'i holiday): November 12 Eid al-Adha: November 05 (Depends on the sighting of the moon in North America) Thanksgiving Day (US): Thursday, November 24 Muharram 1 (Islamic New Year) : November 25 Winter 2011 World Aids Day: December 01 Day Without Art: December 01 Immaculate Conception of the Blessed Virgin Mary: December 08 Human Rights Day (UN): December 10 Chanukah (Begins at Sundown*): December 20 Yule (Wicca): December 22 Winter : December 22 Christmas Day: December 25 Kwanzaa: December 26 - January 01, 2011