openssl x509 -noout -dates

openssl x509 -noout -dates -in /tmp/ca.cert
notBefore=Nov 10 19:45:26 2022 GMT
notAfter=Nov  7 19:45:26 2032 GMT

Related

• How to check certification expiration date from command line

See also

• openssl [ rand | s_client | passwd | openssl req | openssl rsa | openssl genrsa | openssl x509 | openssl ca | openssl verify | openssl ec | openssl dgst | openssl pkcs12 | openssl asn1parse | openssl help | .cer to .pem, openssl version
• X.509, ASN.1, openssl x509, .pem, der, PFX, PKCS, SAN, openssl x509, CSR