how I can hide a canvas in Unity and shows it after some days using C# Script ?

I want a script which helps me to hide the whole canvas for example the first day when I will start playing my game the Canvas will be shown after 5 days , with the help of a button which was disabled since the first day and this button will be enabled after 5 days ( the button Also was hided with canvas ) so when the day that I want comes the button will be enabled and when I click on it it will show the canvas which was hided .

Thank you so much , and I hope that somone Helps me because I really need it !!

,I want a script which helps me to hide a Canvas ( UI ) and Shows it after some days may be after 5 days or more , so when that day come , I can show that canvas using a Button which was disabled since the first day , thank you so much , I really want the help !