une belle journée, un beau jour
Both expressions are rather similar, but:
the weather is enjoyable = c'est une belle journée (fixed phrase)
your marriage = le plus beau jour de votre vie (not...
Days of the week in french. They are not capitalized unless they are the first word of the phrase.
lundi - Monday.
mardi - Tuesday.
mercredi - Wednesday.
jeudi - Thursday.
vendredi -...