Where does “søndag” come from?
søndag (Norwegian Nynorsk) comes from Norwegian Bokmål søndag, from Danish søndag, from Old Danish sundagh, from Old Norse sunnudagr, from Old Saxon sunnundag, from Proto-Germanic *Sunnōn dag, from Latin dies Solis, from Latin sōl — sun.
søndag (Norwegian Nynorsk): Sunday
Ancestry of “søndag”, step by step