Smart way to set 2 variable based on a 3rd variable values without using if

I have a code where I pass a value in whichweek and then it returns the values of dayfand dayt I am using the if statement but it's pretty long and it doesn't feel "pythonic" at all. Is there any elegant way to write this?

here is the way I do it:

if whichweek == 5:
    dayf = 0
    dayt = 32
elif whichweek == 1:
    dayf = 0
    dayt = 8
elif whichweek == 2:
    dayf = 7
    dayt = 15
elif whichweek == 3:
    dayf = 14
    dayt = 22
elif whichweek == 4:
    dayf = 21
    dayt = 29

Thanks for help.