Sentence examples similar to mandatory observance from inspiring English sources

An observance commemorating 9/11.

Memorial Observance will be private.

No observance of any kind.

This year's observance was different.

However, in some countries, the observance varies.

Grace through observance, kosher-style?

At home, we have one observance.

One could not even abstain from observance.

His Judaism is not about religious observance.

This observance exacts a price.

Attendance: mandatory.