Using Lightning with Google Calendar | How to | Thunderbird

Occasionally on this list, someone asks about open source email &
calendar that can be used with LibreOffice. Here are instructions for
using Google Calendar with Thunderbird. You can use the Thunderbird
Add-Ons manager to install both Lightning and "Provider for Google
Calendar", instead of going to a web site and downloading the package.
This also works with the email program in Seamonkey, but Thunderbird
works better with LO.

https://support.mozillamessaging.com/en-US/kb/using-lightning-google-calendar

Hi all,

Occasionally on this list, someone asks about open source email &
calendar that can be used with LibreOffice. Here are instructions for
using Google Calendar with Thunderbird. You can use the Thunderbird
Add-Ons manager to install both Lightning and "Provider for Google
Calendar", instead of going to a web site and downloading the package.

Also bear in mind that the Google Data provider and Lightning extension are said not to work with the newest version of Google's calendar communication protocol API meaning that if nothing is done about it, the whole thing will become a white elephant.

Alex