Where does “春日” come from?

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

春日 (Old Japanese): the spring sun; a day in springtime

Definitions

  1. the spring sun; a day in springtime

Ancestry of “春日”, step by step

春日 traces back through 3 separate lines of ancestry.

via Old Japanese 日

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

via Old Japanese 春

StepLanguageWordMeaning
1Old Japanese春the spring

via Old Japanese spring]], [[springtime]]

StepLanguageWordMeaning
1Old Japanesespring]], [[springtime]]—
Every word from Proto-Japonic *pi →Every word from Old Japanese 日 →