Shrove Tuesday is the last day before the long fast for Lent for some Christians in Canada. It has many names, including Fat Tuesday, Mardi Gras, the Tuesday of Carnival, and Pancake Day. It often coincides with or falls close to the dates for the winter carnival celebrations that occur in the January/February period. Though named for its former religious significance, it is chiefly marked by feasting and celebration, which traditionally preceded the observance of the Lenten fast. It is observed by various Christian denominations. Shrove Tuesday is the day before Ash Wednesday, observed in many Christian countries through participating in confession and absolution, the ritual burning of the previous year’s Holy Week palms, finalizing one’s Lenten sacrifice, as well as eating pancakes and other sweets.
Shrove Tuesday is exactly 47 days before Easter Sunday, a moveable feast based on the cycles of the moon. The date can be any between 3 February and 9 March inclusive.
Shrove Tuesday – TimeAndDate.com
Carnival / Shrove Tuesday – TimeAndDate.com
Shrove Tuesday – Wikipedia