Editors' Note: The Download Now link will prompt a local download of the Firefox extension. To install the extension directly, open the file using your Firefox browser.
ThunderBirthDay is an extension that displays birthdays from the Thunderbird address books as events in Lightning. Install Lightning, MoreColsForAddressBook and ThunderBirthDay, and then create a new local calendar choosing ThunderBirthDay as provider.
What's new in this version:
Version 0.8 added Finnish locales and updated compatibility information for Seamonkey 2.5 and Thunderbird 8.0.