Except when required to prevent or alleviate an emergency, or upon request of the health care facility, a public utility may not terminate or authorize termination on the following days:

1. (1) On Friday, Saturday or Sunday.
2. (2) On a bank holiday or on the day preceding a bank holiday.
3. (3) On a holiday observed by the public utility or on the day preceding the holiday. A holiday observed by a public utility means any day on which the business office of the public utility is closed for any reason.
4. (4) On a holiday observed by the Commission or on the day preceding the holiday.