Event (schema.org)
The schema.org type Event structures events such as concerts, webinars, workshops, trade fairs or courses and makes it easier for search engines to interpret the date, location, price and mode of attendance.
In practice
Event distinguishes between in-person events, online events and hybrid formats, among other things, which is decisive for correct presentation in search. Combined with Offer, you can also state ticket prices and availability, and with Organization the organiser. For recurring dates, a separate Event object per date is preferable to a single combined entry.