observe
US /əbˈzɝːv/
UK /əbˈzɝːv/

1.
2.
3.
to obey a law, rule, or custom
:
•
You must observe the speed limit.
•
They observe strict religious traditions.
4.
to celebrate or acknowledge a holiday or special occasion
:
•
Many cultures observe the New Year with special rituals.
•
The company will observe the national holiday.