Day and night. The Sun lights up one half of the Earth, and the other half is in shadow. As the Earth spins we move from shadow to light and back to shadow and so on. It is daytime in the UK when our part of the planet is in the lit by the Sun.
All behavior contracts should include basic elements, such as: The contractual parties (e.g., patient, provider/staff, guarantor, family members, etc.); The behaviors you expect from the patient, as well as behavior they can expect. from you and your staff; The consequences of violating the contract terms; and.
An example here is a contract regarding real estate. You should seek help from an attorney in your area, especially if money has exchanged hands and one of the parties has not executed the agreement. The type of contract and its terms must be read in light of the actions of both parties. Good luck.