https://webresources.gu.se/RSS_Services/Calendar_dynamic_RSS?categoryNames=conference&calendarIds=&fromSiteNodeId=529651&startDateTime=2019-10-21&endDateTime=2019-10-28&languageId=100000&endDateTime=2019-02-01&siteNodeId=529651&languageId=100000&categoryAttribute=eventTypes&categoryNames=openingCeremony The top 25 events