Where does “laskiaistiistai” come from?
laskiaistiistai (Finnish) comes from Finnish tiistai, from Old Swedish tisdagher, from Old Norse týsdagr, from Proto-Germanic *Tīwas dag, from Latin dīēs Martis, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous — to be bright; sky, heaven.
laskiaistiistai (Finnish): Shrove Tuesday
Ancestry of “laskiaistiistai”, step by step