Hi @Kelsey_Keller, thanks for calling that out! To be fully transparent, adding Date fields to advanced search isn’t on the short-term roadmap right now, but we’re definitely keeping an eye on the interest levels for it.
We actually have a Product Feedback topic for this exact request here: Support Date custom field in Advanced Search.
I’d definitely recommend upvoting it! That way, you’ll get an automatic notification if the status changes or if the team picks it up for development. 