Google and Bing are notified, whenever something changes here. When they will reindex the changed data, is up to them.
Beware, it takes some days for search engines to reflect the existence of new sites. How fast updated content will be reindexed, probably depends on how often the site appears in search results and how users use the search results.
Events in the future are emphasized in search results. Searching for kotynospet finds this event and shows:
When 🕐︎Monday, January 31, 2022 at 13:00 - 18:00 GMT+2
Recurrence monthly, always on last day of month
Created on Sunday, January 02, 2022 at 14:18:17 GMT+2
Last modified on Tuesday, April 19, 2022 at 08:05:47 GMT+3
Next repetition 🕐︎Friday, September 30, 2022 at 13:00 - 18:00 GMT+3
Link to calendar https://central.aegee.org/?d=2022-09-30&id=a23b2b1eb548604619061b73ad6f00bcca82d49a8R20220930T130000&cal=2
💾︎iCalendar file https://central.aegee.org/c/2/23b2b1eb548604619061b73ad6f00bcca82d49a8.ics