(a) A sale shall begin at the time designated in the notice of sale or as soon thereafter as practicable, but not later than one hour after the time fixed therefor unless it is delayed by other sales held at the same place.
(b) No sale shall commence before 10:00 o'clock A.M. or after 4:00 o'clock P.M.
(c) No sale shall continue after 4:00 o'clock P.M., except that in cities or towns of more than 5,000 inhabitants, as shown by the most recent federal census, sales of personal property may continue until 10:00 o'clock P.M. (1949, c. 719, s. 1.)