How much is 1 Earth Day on Mars?

Excuse me, but I was wondering if you could clarify something for me. The concept of "1 Earth Day on Mars" is intriguing, but I'm having a bit of difficulty grasping its precise meaning. Could you please elaborate on how one might go about determining the equivalent duration of an Earth day on the Red Planet? Is there a specific mathematical formula or ratio that's commonly used for such calculations? Additionally, what factors might influence the accuracy of such an estimate, and are there any recent scientific advancements that have shed new light on this topic? Thank you for your time and consideration.