Sunday is dies non juridicus -that is it is not a court day, or a day for judicial proceedings, or legal purposes.

Explanation

(English-origin maxim.) Sunday is not a day for judicial proceedings — legal acts performed on the Lord's day are void unless statute expressly provides otherwise.

Where this applies

• A contract signed on a Sunday is challenged as void because legal acts performed on the Lord's day have no validity under the traditional common-law rule.
• A sheriff who serves a summons on Sunday is told the service is invalid because Sunday is not a day for legal process.
• A court dismisses a judgment entered on a Sunday because judicial acts performed on that day are void unless a statute expressly permits them.