Let's say we have an SSL certificate for a site. According to a web browser, the certificate expires tomorrow, Dec 10 2011.
OK, but that glosses over time zones. When will it expire, exactly?
- 00:00 local time of the server (e.g. ET)
- 00:00 local time of the user browsing the site (wherever)
- 00:00 UTC
(Context of question: An admin who likes to wait until the last day before expiration, to set up the new cert. Why? To "get the most value out of it", he says. I don't follow that logic, exactly, and probably he should just replace it a few days earlier? But anyway I'm concerned/curous whether the cert may stop working for some/all users, before 00:00 our local time.)