(1) When a period of time is in commission rules, orders, or statute, the period begins to run on the day after the act, event, or default. The last day of the period is included, unless it is a Saturday, Sunday or a legal holiday, in which case the period runs until the end of the next day that is not a Saturday, Sunday or a legal holiday.

(2) When the period is less than seven days, exclude Saturdays, Sundays and legal holidays in the calculation.

(3) This section does not apply to periods of license suspension.