Idaho Code § 60-108
A daily newspaper is [as] defined in section 60-107 [, Idaho Code,] and published within the state of Idaho, may designate a particular day of the week on which legal notices required by law or by order of any court of competent jurisdiction within the state to be published weekly, will be published, and all notices published in the issue of said newspaper under said date, shall be deemed to have been published once a week in a weekly newspaper.
Provided, however, that the publisher of such newspaper shall, at the head of the editorial column of said paper and in each issue thereof, announce the day of the week on which such legal notices required by law or by order of any court of competent jurisdiction to be published weekly, will be published.
Provided, further, that when said day of the week falls on a legal holiday on which the said newspaper does not publish a regular issue, all such legal notices intended for publication on that day may be published on the next following or preceding business day, and such notice so published shall be deemed to have been published once per week.
Idaho Code § 60-108