Regular expression two possible responses

Hi, I have a script monitor in sitescope running a curl looking at the certificates of a site, but the problem is that this response can have two possible dates, and I don't know how to separate the values ​​in the regular expression.

Example /"expiration date: Sep 16 23:59:59 2025 GMT""expiration date: Nov 16 23:59:59 2024 GMT"/