https://webresources.gu.se/RSS_Services/Calendar_dynamic_RSS?categoryNames=openLecture&calendarIds=1766552188&fromSiteNodeId=528540&languageId=100000&calendarMonth=2019-12&tipFriend=true&tipUrl=http%3A%2F%2Fpsy.gu.se%2Faktuellt%2Fkalendarium%2F%3FtipFriend%3Dtrue%26tipUrl%3Dhttp%253A%252F%252Fpsy.gu.se%252Faktuellt%252Fkalendarium%252F%253FsiteNodeId%253D528540%2526languageId%253D100000%2526startDateTime%253D2019-02-01%2526endDateTime%253D2019-02-01%26siteNodeId%3D528540%26languageId%3D100000%26startDateTime%3D2019-02-01%26endDateTime%3D2019-02-01 The top 25 events