Change “DAY 1” above the sessions overview

Hi,

I’ve been looking to change the “DAY #” above the sessions overview but can’t seem to locate it.
We are now hosting multiple events spreaded over multiple days but not after each other, so DAY 1 or DAY 2 doesn’t work.

I wanted to change it to the session category.

Thought it was this line:
echo ‘<div class=”gdlr-session-head-day”>’ . sprintf($cat_term->name, $tab_num) . ‘</div>’;

But any changes doesn’t effect the page.

Kind regards,
Tom