Computation of Time

Any period of time prescribed or referred to in 309 CMR shall begin with the first day following the act which initiates the running of the time period, and shall include every calendar day, including the last day of the time period so computed. When the last day of any such period falls on a day when the Board's office is closed, the period will be deemed to run until the end of the next day on which the Board's office is open.