occasion (n)

We met on several occasions to discuss the issue.
I've heard him be rude to her on a number of occasions.
I seem to remember that on that occasion he was with his wife.
The family gathered for a special occasion to celebrate their grandmother's birthday.
A black-tie dress code is appropriate for formal occasions.
The graduation ceremony is a momentous occasion for students and their families.
Friends often come together on such occasions to create lasting memories.