religious observance

Translations
религиозное соблюдение
Many people participate in religious observance during the holidays.
Многие люди участвуют в религиозных обрядах во время праздников.
Definitions
A religious observance refers to a practice or ritual that is performed in accordance with the beliefs and traditions of a particular faith or religion. This can include ceremonies, prayers, festivals, and other activities that are intended to honor, worship, or commemorate a deity or religious principles.