Assuming that you have the year on A1,
on A2 you can use the formula =Date(a1,1,1) and it will return 01/Jan/aaaa.
on A3 the formula could be =A2+1
on A4 the formula could be =A3+1
Just format it as your convenience
for the B Column, =weekday(a2). format it as "ddd" for Sun or "dddd" for
hope it heps.
regards from Brazil