In France, the act of wishing someone a nice day (Bonne journée!)

holds significant cultural importance and etiquette.

This simple gesture reflects the French emphasis on politeness, respect, and the recognition of others in daily interactions.

When greeting someone or parting ways, saying "Bonne journée!"

(Have a good day) is a common and expected courtesy.

It is a way to acknowledge the other person, show that you wish them well, and maintain a pleasant atmosphere.

This custom is rooted in the French cultural value of savoir-vivre, which translates to the "art of living" and encompasses gracious behavior, etiquette, and social graces. - https://francefocusguide.com/blog/discover-nice-day-france/

Wishing Well: The Cultural Etiquette of Greeting in France