Where does “сего лѣта” come from?

сего лѣта (Old East Slavic) comes from Proto-Slavic *sego lěta.

Ancestry of “сего лѣта”, step by step

StepLanguageWordMeaning
1Proto-Slavic*sego lěta

Words derived from “сего лѣта

Every word from Proto-Slavic *sego lěta