ていきゅうび定休日teikyuubi
1.
A designated day when a business is closed and does not operate, typically established to provide employees with a consistent day off each week.
2.
A scheduled day of rest for a shop or service, during which no services are offered to customers, allowing for maintenance or employee leisure.
3.
A predictable closure day for an establishment, often communicated to patrons in advance, ensuring they know when to expect the business to be unavailable.
Example:
本日定休日。