SAS EuroBonus Silver members get new temporarily benefit for the first half of 2018 when they can access SAS’ own lounges on Saturdays only.
SAS Silver members already get lounges access every day during the summer (July 8 – August 20) and around the Christmas/New Years (December 16 – January 7).
You can access SAS web page for Silver benefits here.
Note that this applies to SAS lounges in Norway, Sweden, Denmark, Finland, New York, Chicago and Paris.
You have to keep in mind that SAS recently discontinued lounge access to third party lounges in most European airports where there are no lounges operated by Star Alliance airlines (and where SAS cannot deny their ticket holders access to) regardless of ticketed cabin class or status.
Lounges are probably quieter on Saturdays due to being slow travel day and it doesn’t hurt to give some extra benefit to Silver members.