Import Events to Sheet is a Google Spreadsheet add-on which can be used to list all your Calendar Events from Primary & Secondary Calendars into Google Sheet for further analysis. 

If you want to see all your past & future events at one place in Google Spreadsheet, then this add-on will help you to achieve the same. This may help to track work hours if you manage it in Google Calendar or for other different use cases.

You can simply select Calendar Name in drop-down from which you want to export events from.
You can also specify From & To date if you want to export events between specific date range range.
This Add-On will help you to fetch below details with just few clicks:
Start Date,Start Time,End Date,End Time,Event Title,Location,Description,Guests,Recurrence,Created By,Created On,Event URL