Religious Holidays in General
Advent
http://catholicism.about.com/od/holydaysandholidays/p/Advent.htm
http://christianity.about.com/od/christmas/tp/allaboutadvent.htm
http://www.sharefaith.com/guide/Christian-Holidays/advent_season.html
http://christianity.about.com/od/christmas/tp/allaboutadvent.htm
Ash Wednesday
http://www.religionfacts.com/christianity/holidays/ash_wednesday.htm http://www.catholic.org/clife/lent/ashwed.php
http://www.patheos.com/blogs/markdroberts/series/ash-wednesday-practice-and-meaning/
Chinese New Year
http://www.infoplease.com/spot/chinesenewyear1.html
http://www.history.com/topics/chinese-new-year
Christmas
http://www.history.com/topics/christmas
http://www.crivoice.org/cyepiph.html
http://tlc.howstuffworks.com/family/twelve-days-christmas1.htm
Diwali
http://www.bbc.co.uk/schools/religion/hinduism/diwali.shtml
http://www.diwalifestival.org/diwali-meaning-significance.html
http://hinduism.about.com/od/diwalifestivaloflights/a/diwali.htm
Eid-al-Adha
http://islam.about.com/od/hajj/a/adha.htm
http://www.cnn.com/2012/10/26/world/eid-5-things/index.html
http://www.bbc.co.uk/schools/religion/islam/eid_haj.shtml
Eid-al-Fitr
http://islam.about.com/od/ramadan/f/eid_fitr.htm
http://www.history.com/topics/ramadan
http://www.bbc.co.uk/religion/religions/islam/holydays/eidulfitr.shtml
Good Friday
http://christianity.about.com/od/holidaytips/qt/whatisgoodfrida.htm
Hanukkah
http://www.bbc.co.uk/religion/religions/judaism/holydays/hanukkah.shtml
http://www.history.com/topics/hanukkah
http://judaism.about.com/od/holidays/a/hanukkah.htm
http://www.hebcal.com/holidays/2017
Kwanzaa
http://www.officialkwanzaawebsite.org/index.shtml
http://www.history.com/topics/kwanzaa-history
Lent
Magha Puja Day
http://buddhism.about.com/od/buddhistholidays/a/maghapuja.htm
Navaratri
http://hinduism.about.com/od/festivalsholidays/a/navaratri.htm
http://www.bbc.co.uk/religion/religions/hinduism/holydays/navaratri.shtml
http://www.patheos.com/Library/Hinduism.html
Pesach
http://www.jewfaq.org/holidaya.htm http://www.jewfaq.org/holidaya.htm
Atheists, Freethinkers, Humanism etc.,
American Atheist: http://atheists.org
American Humanist Association: www.americanhumanist.org
Atheist Alliance International: www.atheistalliance.org
The Freethought Society: www.ftsociety.org
Secular Coalition for American: http://secular.org
Ramadan
http://www.bbc.co.uk/religion/religions/islam/practices/ramadan_1.shtml
http://www.factmonster.com/spot/ramadan1.html
http://www.colostate.edu/orgs/MSA/events/Ramadan.html
http://www.pewforum.org/Muslim/the-worlds-muslims-unity-and-diversity-2-religious-commitment.aspx
Rosh HaShanah
http://www.history.com/topics/rosh-hashanah-history
http://judaism.about.com/od/holidays/a/roshhashanah.htm
http://www.jewfaq.org/holiday2.htm
Visakha Puja Day
http://www2.tat.or.th/visakhapuja/eng/about.html
Yom Kippur
http://judaism.about.com/od/holidays/a/yomkippur.htm
http://www.bbc.co.uk/religion/religions/judaism/holydays/yomkippur.shtml
http://www.jewfaq.org/holiday4.htm
http://www.history.com/topics/yom-kippur-history