Where does “Montag” come from?

Montag (English) comes from German montag, from Middle High German mōntac, from Old High German mānotag, from Proto-Germanic *mānini dag, from Latin dies Lūnae, from Ancient Greek σελήνη, from Ancient Greek Σέλας — light, brightness, the bright flame or blaze of fire.

Ancestry of “Montag”, step by step

StepLanguageWordMeaning
1GermanmontagMonday
2Middle High Germanmōntac
3Old High GermanmānotagMonday
4Proto-Germanic*mānini dag
5Latindies LūnaeMonday
6Ancient Greekσελήνηmoon; month; a moon-shaped cake
7Ancient GreekΣέλαςlight, brightness, the bright flame or blaze of fire
Every word from Ancient Greek ΣέλαςEvery word from Ancient Greek σελήνηEvery word from Latin dies Lūnae