LITHUANIAN CUSTOMS AND TRADITIONS Shrovetide masks of folk ensemble ''Suduviai'' from Vilkavi kis. Shrovetide masks made in Giedriai principal school. Shrovetide masks made in Gi ai high school. Exibition of Shrovetide masks in Vilkavi kis, 1996. SHROVE TUESDAY Shrove Tuesday not a holiday but is singled out as the day which puts to end meat eating and the time of merrymaking Tuesday before Lent.