SSL certificate for https://sdf.org/ expires in 49 days Server certificate: subject:/CN=sdf.org start date: 2025-04-26 05:59:50 GMT expire date:2025-07-25 05:59:49 GMT key size:256 issuer:/C=US/O=Let's Encrypt/CN=E6 signature algorithm: ecdsa-with-SHA384 Cipher used: TLS_AES_256_GCM_SHA384 (256 bits)