Can rules reference User Defined Tables?

Summary: Can rules reference User Defined Tables?

Content (required): I need to add a rule to check that Action dates are not on a company holiday. I was thinking of creating a user defined table with the holidays so the rule could reference that table. Can this be done?

Version (include the version you are using, if applicable): 21C

Code Snippet (add any code snippets that support your topic, if applicable):