Where does “金曜日” come from?

金曜日 (Japanese) comes from Japanese 日, from Old Japanese 日, from Proto-Japonic *pi — day, sun.

金曜日 (Japanese): Friday

Definitions

  1. Friday

Ancestry of “金曜日”, step by step

金曜日 traces back through two separate lines of ancestry.

via Japanese 日

StepLanguageWordMeaning
1Japanese日Sunday
2Old Japanese日the sun; sunlight, sunshine; daytime, daylight
3Proto-Japonic*piday, sun

via Japanese 金曜

StepLanguageWordMeaning
1Japanese金曜planet Venus; Friday
Every word from Proto-Japonic *pi →Every word from Old Japanese 日 →Every word from Japanese 日 →