This page relies on a public Google Calendar. If you run an aggressive adBlocker or anti-tracker, or block some cross-domain talk on websites, it probably won’t work for you.
If you can’t see the frame below you use another browser, or open an incognito tab with anti-tracking disabled to take note of the times.
If you have a Google account you can just import the calendar and then localise the events to check when they will occur in your time-zone.