Yes, the possessive form of the noun week is the correct form for 'the end of the week' (the week's end).
The duration of This Week in Baseball is 1800.0 seconds.
Bon week-end or Aie/Ayez un bon week-end !
Week-end at Zuydcoote was created in 1949.
This Week in Baseball was created on 1977-04-01.
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.
They usually base it off of the schedule of each team in the MLB. It falls on a day when none of the teams have games.
le week-end - la fin de semaine
Week-End at the Waldorf was created on 1945-10-04.