Saturday-to-Monday
/ˈsatədeɪ tə ˈmʌndeɪ/ /ˈsatədi tə ˈmʌndi/adjective
Lasting, valid, or used for the period from Saturday till Monday.
noun
A period of holiday or leisure beginning on a Saturday and ending on a Monday; the weekend considered as this period of time. Now chiefly historical.
Origin
Early 19th century; earliest use found in Francis Douce (1757–1834), antiquary and collector. From Saturday + to + Monday.