An arbitrary start and end date means that you could post-date the certificate to be good for two years starting from 1 year ago, even though you created it tod

An arbitrary start and end date means that you could post-date the certificate to be good for two years starting from 1 year ago, even though you created it today. That's what the parent post is talking about. [edit: You're right. Even w/ arbitrary dates, end dates crossing the threshold will still not be accepted.]