Wherever the statutes of Nebraska provide for the publication of notices any number of weeks, or for any number of weeks, the term week shall be construed to mean either a period of time known as a calendar week beginning on Sunday and ending with Saturday, or any period of seven consecutive days beginning with the date of the first publication of notice; Provided, however, nothing herein contained shall be held to apply to any notice published prior to April 17, 1915.
Neb. Rev. Stat. §§ 25-2227