"nobody should be renewing their certificate within 90 minutes of expiration"
You obviously haven't worked with hardware guys.
"I mean, what's the point of those last 30 days if you need to renew it 30 days before expiration? Why not just renew it before it expires? If I'm required to renew it 30 days before the expiration date then the expiration date is a lie, isn't it?"
> If I'm required to renew it 30 days before the expiration date then the expiration date is a lie, isn't it?
Many countries won't let you enter if your passport expires less than 6 months after your planned departure date. Basically the effective validity of a passport is 0.5 years less than the period you pay for.
If they make 7 days grace period then expiration date will be a lie and of course every one will use grace period like it would be normal thing ;)