Hi Catherine,
I can understand why you would want to do that. But creating a plugin to display dates meant we had to choose what would work in all possible situations. For instance, how would you like it to appear if the dates crossed from one month to another? November 23rd – 4th, 9am – 5:00pm doesn’t make much sense, at least to me. And even to add the “th” to the dates is problematic since sometimes that needs to be “st” or “nd”. It is possible, but not straightforward.
That being said, it’s possible to do most anything with some tweaking. Where were you wanting this to be changed? On the single event view? A different view? Everywhere? Also, have you tried playing around with the WordPress settings to see if something there works to make it acceptable to you?
If you do want to dive in and make some customizations, you can find our documentation over at http://docs.tri.be/ and there might be some useful information in our Themer’s Guide as well https://theeventscalendar.com/support/documentation/events-calendar-themers-guide/.
If you need a little more direction, please feel free to ask.
— Julie