OAR 350-060-0045
Time
(1)
Computation: In computing any period of time prescribed or allowed by these rules, the day of the act from which the designated time period begins to run shall not be included and the last day of the time period shall be included.(2)
Whenever a party has the right or is required to do some act or take some proceedings within a prescribed period of time after service of a document, and the service of the document is by mail, three (3) days shall be added to the prescribed time period. This does not apply to documents mailed when filing and service is accomplished by email.(3)
When a deadline for accomplishing some act under these rules falls on a weekend or legal holiday, the deadline shall be the next business day, and all following deadlines shall be calculated from that deadline. A legal holiday shall be any day in which the United States Postal Service does not deliver mail, or when the Gorge Commission is closed for business.
Source:
Rule 350-060-0045 — Time, https://secure.sos.state.or.us/oard/view.action?ruleNumber=350-060-0045.