The statute text
13 (1) The term or period of a tenancy begins on the day the tenant is entitled to occupy the rental unit under the tenancy agreement.
(2) A tenancy agreement takes effect when the tenant is entitled to occupy the rental unit, whether or not the tenant actually occupies it.
View this section on the official Ontario e-Laws site →
Reproduced under the King’s Printer for Ontario / Open Government Licence – Ontario. Confirm against the official e-Laws consolidation before relying on it.