12. Termination of agreement by notice

Either party to an agreement for a period of time may terminate such agreement on the expiration of due notice given by him to the other party of his intention so to do; the length of the notice to be given shall, unless otherwise stipulated by the terms of the agreement, be equal to the period of the agreement to be terminated:

Such notice may be either oral or written and may be given at any time and the day on which notice is given shall be included in the period of the notice.