Not updating your Windows timezones will result in unreliable and erroneous display and entry of time data! Be sure to do this. Information on obtaining the updated timezones can be found in Microsoft Knowledge Base article 955839. IMPORTANT: Install the updated timezones for Windows XP or later.

Windows users must have Windows XP or later. provides Lightning for Windows, Linux and Mac OS X in a variety of languages.

Please check the Thunderbird or Seamonkey release notes for more details.īefore installing, make sure your computer meets the system requirements. Lightning requires slightly more processing power and memory than the equivalent version of Thunderbird. Lightning is compatible with Thunderbird and SeaMonkey. Lightning is licensed under the MPL/GPL/LGPL triple license, allowing use of the files under the terms of any one of the Mozilla Public License, the GNU General Public License, or the GNU Lesser General Public License. Please support our efforts by donating to the Calendar Project. Since it's an extension, Lightning is tightly integrated with Thunderbird, allowing it to easily perform email-related calendaring tasks. Is it possible to access the Thunderbird (Lightning) calendar read/write from another application (e.g.Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird. Unfortunately I'm not aware on how I can access the Thunderbird Lightning calendar with my tool. The idea is to write an App for my mobile device connecting to the tool via TCP or UDP so the tool is able to modify the mobile device's calendar by sending commands to the App. My mobile device and my Lightning calendar should be supported. I'm planning to develop a tool (running on the Windows PC) which allows comparing and merging calendar events between different calendars.

Thunderbird lightning calendar