What does the specific error 'NET::ERR_CERT_DATE_INVALID' mean, and how is it typically addressed?

The 'NET::ERR_CERT_DATE_INVALID' error specifically means that the browser has detected an issue with the validity period of the SSL certificate. This usually happens if the certificate has expired, or if the client's system clock is significantly out of sync with the actual date and time (making the certificate appear expired or not yet valid). To address this, users should correct their computer's date and time, while website administrators must renew and re-install an unexpired certificate.