Days of the month formula

Hi - im trying to create a rota for staffing but im sure there must be a quicker way than manually typing 'sat 1 - sun 2 - mon 3 ' into each cell! I've attached an example of the format that i use and would like to stick with, i just dont know how to make a formula for this. any thoughts? thanks

EDIT :

OK there was a solution provided, here it is -

Put the date into cell D85 (THIS CAN BE ANY CELL NUMBER, D85 IS JUST THE ONE I USED)

then in cell B1 (OR WHERE YOU NEED IT) entered the following formula -

=$D$85 (IF YOU'VE USED A DIFFERENT CELL NUMBER THEN RELATE TO THAT - I USED D85)

then once that's come up with the date i've right clicked and customised the display so that it says 'Thur 1'

Then in the next cell (C1) i've entered the formula - "=B1+1"