openssl s_client -connect gateway.push.apple.com:2195 -cert /path/cert.pem
Check Expiry Date:
openssl x509 -enddate -noout -in file.pem
openssl s_client -connect gateway.push.apple.com:2195 -cert /path/cert.pem
Check Expiry Date:
openssl x509 -enddate -noout -in file.pem