In computing any time period prescribed by these Regulations, the day of the act or event from which the time period begins to run shall not be included. The last day of the period so computed shall be included, unless it is a legal holiday, in which event the period runs until the end of the next day which is not a legal holiday. When the period is less than eleven (11) days, legal holidays shall be excluded in the computation.
021-1 Wyo. Code R. § 1-5