Sunday, February 17 is Septuagesima Sunday, followed by Sexagesima and Quinquagesima Sundays. Sunday kicks off Carnival season, which comes right before Shrovetide, which culminates in Shrove Tuesday - more popularly known as Mardi Gras.

If all but the last of those holidays sounds foreign to you, you are likely not alone - they haven’t been officially a part of the Roman Rite’s liturgical calendar since the 1960s, after the reforms of the Second Vatican Council.

These strange-sounding days once marked a period of pre-Lenten preparation and feasting that is still observed by some rites within the Catholic Church and other Christian traditions.