Deleting a cookie that was made before a certain date

[tibberous]

I have changed the login code for a forum but imagine a lot of the users has a cookie already set. Is there some way I can see when I cookie was made and delete it if it is older than a specific date?

[freakstyle]

you could look at the expired date for that cookie, assuming you set it to begin with.

 

will users be able to log in automatically if they have the old cookie set? if so just change the cookie name that your app uses and call it a night/ mornign

[Fadion]

I guess there's no method of getting the cookie creation date.