What is the length of notice to quit a monthly or weekly tenancy?

Except in the case of a tenancy from year to year, the length of the notice to quit has not been fixed precisely. The general principle is that in the absence of special stipulation, “reasonable” notice must be given, and in the case of weekly and monthly tenancies it has been repeatedly held from very early times that a notice equal in length to the period of the tenancy is sufficient. It would seem to be still a question of fact in each case whether any shorter notice is reasonable. (See cases cited in 18 Halsbury, p. 445.) In this case the notice is given on the 23rd October for the 15th November, and is, in my opinion, bad, because it does not expire on and with the last day of the period of the tenancy. Doe d. Spicer v. Lea (1809), 11 East 312.