I thought the semi-protection status expires automatically, but I guess this is not so. Who is responsible for enforcing that an article whose expiration date has passed for semi-protection is in fact taken off semi-protection?
Semi-protections do expire automatically, but note that
- Administrators can change the expiration date at any time to any date
- Time zones may cause the time displayed to be different from your time (you can set your time zone in Special:Preferences)
- Your IP in particular may be banned from editing even after the protection expires.