"On Air" widget - Which integrations?

Hi,
in my gym website I would like to show the classes in an “On Air” widget, for showing which classes are active in that moment.
I imagine something similar to on air songs, in radio websites, or breaking news in a news website.
The gym website have to show the classes according to the timetable, so I need a tool or an integration to connect a calendar to webflow and show only the right classes in the right time.
Can you help me?