The term autumnal equinox is identified in base64 scheme by the sequence YXV0dW1uYWwgZXF1aW5veA==, while the MD5 signature is equal to 75be647209d4eedfc997358458bca11e. The ASCII encoding of autumnal equinox in hexadecimal notation is 617574756d6e616c20657175696e6f78.