Hey Kate,
Thanks for reaching out.
Adding start/end time/date to that snippet is, fortunately, pretty straightforward—you mainly just have to add a call to The Events Calendar’s tribe_events_event_schedule_details() function where you want the dates to show up.
To demonstrate this, I have modified that original snippet to include a call to this function. Check out this modified snippet here ? https://git.io/vKF8b
☝️ You’ll notice the function call on line 15 of this snippet. If you want to further tweak things from here, play around with the code on line 15 in this snippet.
Best of luck with your customizing! 😀
George