Mutiple pivot table dates dropdown

[mukesh a]

I have single data file. Where multiple pivot tables are there . It's a last year data file . In that dropdown date field is common. Where I have click the date field and upgrade to last year Feb dates till 18th Feb. In all the table same thing I need to repeat.
Since I am checking current year sales with last year.
So please help me any single command where all the dates in all pivot tables can be changed to 1st Feb to 18th Feb.