Apostrophe

I say yes to all below with regard to the apostrophe insertions.

1) one week's vacation
2) two week's vacation
3) one dollar's worth of gas
4) two dollars' worth of gas
5) one night's hotel accommodations
6) two nights' hotel accommodations
7) a penny's worth
8) two pennies' worth
9) two hours' overtime
10) one year's time
11) two years' time
12) two days' vacation
13) two months' vacation

thanks