Exporting a calendar from Thunderbird


  1. Open Thunderbird.
  2. Click Events and Tasks.
  3. Use the Export command to open a selection dialog.
  4. Select the calendar you want to export, choose .ics and click OK.
  5. Specify the file name of the exported calendar, and where the exported calendar will be stored. This exports an .ics file  that you can upload or import into another app or service.