Problem:
The user would like to filter a view by date against two datetime custom fields.

Solution:
That's tricky, because dates are considered to have the time 00:00:00. So if an event begins and ends on the same day, the view will not find it.

This will require custom code and custom logic. Check the example here https://toolset.com/forums/topic/limit-datepicker-in-view/#post-2227857

Relevant Documentation:

• https://toolset.com/documentation/programmer-reference/adding-custom-javascript-code-to-views-that-use-ajax/
• https://toolset.com/documentation/programmer-reference/views-filters/#wpv_filter_query
• https://developer.wordpress.org/reference/classes/wp_query/