Greetings,

Yes the verification centers will open all the 4 days that have mentioned in the schedule if you are not able to reach the verification center on your specified time you can go for the verify your documents within November 9. and it will be the last date for verification.

here I provide you the official notice for the UP NEET UG counselling and documents verification.

https://upneet.gov.in/PDFFile/2167.pdf

you can also reach then out via this mail ID or phone number which they have mentioned in their official site for any queries.

https://upneet.gov.in/

hope this is helpful thank you