I have a michael kors watch with three dials. One for the date one for the hour of the day and one for the day. The dial with the days is on the wrong day and i cannot change it.

Question edited for clarity FULL 'make model (what is is).
Question moved from Cars and Trucks, which also doesn't help identification of the mk 5603 or mk5603!

Best advice right here. Also "the same as the one that is in it".

https://www.fixya.com/support/r27181038-changing_watch_batteries

Watch Battery for Michael Kors MK5603

Big Apple Watch & Accessories https://bigapplewatch.com > Watch-Battery-for-Micha...
Silver Oxide watch battery, quality name brand (Maxell, Sony, Energizer); Average battery life 2 to 3 years; Size and type equivalent to Michael Kors watch ...
US$6.75

Watch band Michael Kors MK5603 Stainless steel 20mm

Watchstraps-Batteries.com https://www.watchstraps-batteries.com > watch-strap-m...
This watch strap from Michael Kors fits on the watch model MK5603. Please ... Unfortunately, we do not know (yet) which battery is suitable for your Michael Kors ...
£76.73

Michael Kors Watch Battery Replacement Guide

RepairTJC.com https://www.repairtjc.com > Guides
Michael Kors use 395 and 371 pretty evenly. We recommend using a quality brand such as Duracell or Renata when replacing the battery of your Michael Kors watch .

Please find below a link for a multi instruction manual.
match the dials and pushers and use the manual.
https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwinlOKtz7nYAhXJJcAKHTQ1AVMQFggnMAA&url=https%3A%2F%2Fimages-eu.ssl-images-amazon.com%2Fimages%2FI%2FC14w6u0c62S.pdf&usg=AOvVaw290bGYWoeQCSaX-VEyQdtS
Regards

If the watch is worth it to you, you need to take it to a watch maker for repairs.

The 3 dials are for the Chronograph function! The top left dial indicates minutes! Top right dial indicates hours and bottom dial indicates seconds!

At the end of a month that is less than 31 days you must manually advance the date.

Take it back and ask the seller.

Pull the stem out to the time set level. Turn the hand around until the date change. Now push the stem back in, pull to date set level and change to current date. Now the watch is at midnight for that current date. Note you can set to current time of day. The Watch will automatically change to correct date for next day at midnight as it should.

I just set mine.....the stem has to be barely pulled out, there are two stem setting but the first is very easy to miss. Once you barely have it out turn and you will see the date change.

You can get instructionsfrom the Micheal Kors web site.

Enter (copy this) "www.michaelkors.com/category/assistance/service/KORS_Instruction-Warranty.pdf" into your search engine and you will see a long list of instructions and diagrams for the various watches they make.

Choose the one that looks like yours.