Where does “llunes” come from?

llunes (Asturian) comes from Old Leonese lunes, from Latin Lūnae dīēs, from Latin dies Lūnae, from Ancient Greek σελήνη, from Ancient Greek Σέλας.

llunes (Asturian): Monday

Definitions

Step	Language	Word	Meaning
1	Old Leonese	lunes	—
2	Latin	Lūnae dīēs	—
3	Latin	dies Lūnae	—
4	Ancient Greek	σελήνη	moon; month; a moon-shaped cake
5	Ancient Greek	Σέλας	—

llunes — Etymology, Origin & Word History | Etymology Explorer