: Mozilla provides pre-made holiday calendar files that you can download and import directly into your view.
: Click the Calendar icon typically located in the top-right corner or on the left-side toolbar. Menu Navigation : Go to Events and Tasks > Calendar . thunderbird calendar download
Since version 78.0, the calendar comes pre-installed. To find it: : Mozilla provides pre-made holiday calendar files that
: If you have a downloaded calendar file, go to Events and Tasks > Import , select your file, and choose which calendar to add the events to. select your file