Saturday is the last day of the week, so at midnight on Saturday, the week ends. See the related question below.
Yes, the possessive form of the noun week is the correct form for 'the end of the week' (the week's end).
Week-end at Zuydcoote was created in 1949.
Bon week-end or Aie/Ayez un bon week-end !
The Week ended in 1941.
No, it's a noun. Incidentally, "end of the week" is not a sentence, it is a phrase.
The duration of Week-End at the Waldorf is 2.17 hours.
The duration of Week-End in Havana is 1.35 hours.
le week-end - la fin de semaine
Week-End at the Waldorf was created on 1945-10-04.
Week End Tour was created on 2004-10-04.
The Week-End - 1921 was released on: USA: 1921
Week-End in Havana was created on 1941-10-08.