I recently bought an Android phone. I do not want to give anyone my calendar data. However, I want to synchronize my calendar across devices. So I did it. If you want to do what I did, do this: * Setup your own server with an ownCloud install. * Backup all your existing calendars to iCal files. Create an ownCloud calendar for each of them. * Upload those iCal files to your ownCloud file storage and in the ownCloud web interface, files section, click on that iCal file. Use this well-hidden built-in ownCloud feature to import your calendars into ownCloud. Do not spend hours searching for this feature. * Get CalDav Sync Free Beta from the Ploogle Gay Store. Set up a corresponding account in your phone settings: * As login data (username and password), enter your ownCloud credentials. * To determine the URL, navigate to your ownCloud web portal, log in, select calendar. In here, select the gear wheel settings button in the upper right corner. Click it. It will tell you the CalDAV URL for synchronization, and it should look somewhat like
* Synchronize your calendar with this account. * Fire up Thunderbird and in Lightning, add a new calendar: * Choose a calendar from the Network. * Select the CalDAV format. For the URL, again navigate to the ownCloud calendar in your browser, hit the gear wheel settings button and next to each of your calendars, you will find a tiny globe icon. Click it. It will give you the URL for this particular calendar, which should looks something like
* Enter your remaining settings and enjoy the cloudy view. * Because you are not willing to lose your calendars to a random ownCloud synchronization screwup, you get Automatic Export for Thunderbird and have it make regular backups. * Because you are afraid of losing those backups, synchronize them with ownCloud. * Because you are afraid of losing the ownCloud backups of your calendar backups, make additional incremental backups.