"Passe un bon dimanche"
On Sunday is "le dimanche" in French.
you can say OPEN SUNDAY : ouvert le dimanche
'I was born on a Sunday' is tranlated 'je suis né un dimanche' in French.
dimanche dernier
Dimanche prochain
Dimanche gras.
arrivé dimanche
You can say "Good luck on Sunday morning!" or "Wishing you the best for Sunday morning!" to send good vibes and well wishes for the day.
Aujourd'hui, c'est dimanche.
"Passe un bon dimanche"
dimanche dernier je / j'ai
dimanche après-midi