Hi @maira
If it’s too advanced, I suggest you hire a developer to help you out with it, and I’d recommend looking for one on https://studio.envato.com/, https://www.upwork.com/, or https://codeable.io/.
If you use a single Date Time Picker, that would make things much simpler. Please check this page to learn more about it: https://www.advancedcustomfields.com/resources/orde-posts-by-custom-fields/.
Hope this helps 🙂
