changing the date to long in DB and also in the project.
you need to change the type of coulmn in the DB wherever it's written
DATE to change to BIGINT.

i fixed all the pages and also the DAL , there is a chance that i forgot
some things i need you to check your pages and make sure everything is
working well.
talk to me.

---please don't forget to change the DB be careful and change in each
table.