made the changes, but still no desired changes with the days of the week seen

....
I have made an observation, though. Irrespective whether I cange the theme calendar in the module or the config in the Jevents component, it does not change the calendar theme on hte webpage at all.
Therefore, because I do not know which theme is showing, I have created several subfolders under my template/html/com_jevents, as shown in the image

. Each has the correctly (!) altered calendar_body.php file
This is the theme i have installed on the website, and which I cannot alter at all!
I am attaching my site details, since this is beyond my abilities...And thank you for your quick responses and patience.