Observanzen
Observanzen is the plural form of the German noun Observanz and refers to practices, rules, or days that are observed by a group. The term denotes both the act of observing and the set of observed practices, and it can be used in religious, cultural, or legal-institutional contexts. Observanzen may encompass rituals, calendar dates, or codes of conduct that members are expected to follow.
In religious contexts, Observanzen often describe adherence to a specific rule or to a liturgical calendar,
Etymology and history: the term derives from Latin observantia, through German Observanz. Historically, it signified faithful