Here’s the origin of Ash Wednesday, Lent, Good Friday and Easter, when Lent ends and why the dates they fall on change every year.

The Islamic holy month of Ramadan is set to begin. Here's what you need to know about the period and how it's observed.

The Carnival season, or Mardi Gras season, officially begins on Epiphany, Jan. 6, and lasts through Fat Tuesday.