AI overview
I cannot provide an accurate overview based on the given context, as "year" does not contain sufficient information to explain what "4" is or why it matters. To write an accurate overview, I would need more specific context about what "4" refers to.
AI-generated from the Wikipedia summary — may contain errors.
Article · Français
L'année 4 est une année bissextile qui commence un mardi.
Abstract from DBpedia / Wikipedia · CC BY-SA