This article demonstrate the way how to check your SSL Expiry date on Plesk.
1. Login to your control panel Plesk Web Admin
2. Search for SSL/TLS Certificate and Click
3. Once you have click SSL/TLS Certificate it will go to page SSL/TLS Certificate for domain.com.
Below showing (Valid To : October 10, 2021) where your Certificate expiry date.
Other way to verify via Online platform : https://www.sslshopper.com/