Earliest day on which Shrove Tuesday can fall, while March 9 is the latest; celebrated on Tuesday before Ash Wednesday (Christianity)

Shrove Tuesday is the final day of Shrovetide, which marks the end of the pre-Lenten season. Lent begins the following day with Ash Wednesday. Shrove Tuesday is observed in many Christian countries through participating in confession, the ritual burning of the previous year's Holy Week palms, finalizing one's Lenten sacrifice, as well as eating pancakes and other sweets.

Ash Wednesday is a holy day of prayer and fasting in many Western Christian denominations. It is preceded by Shrove Tuesday and marks the first day of Lent: the seven weeks of prayer, fasting and almsgiving before the arrival of Easter.