Sentence examples for a curfew from inspiring English sources

The phrase "a curfew" is correct and usable in written English.
You can use it when referring to a regulation or rule that sets a specific time by which individuals, often minors, must return home or be indoors.
Example: "The school implemented a curfew for all students to ensure their safety during the late hours."
Alternatives: "a time restriction" or "a nighttime rule".