You can create a self join relationship date = date, create a summary field and set it to be the count of primary keys. Finally a subsummary part when records are being sorted by date and put the summary field(from the self join related table) on the sub subsummary part.
The total number of events will then be shown before or after (depends on how you set the sub summary part) each date. If this is not what you want, please let us know how you would like the data to be displayed in the report.
Of course it's possible. Do your events have actual dates, or just month and day?