In my Google calendar, I have the automatic birthday calendar. The birthdays of people in my (Google) contact list will appear in my calendar. See the first attached imag… (read more)
In my Google calendar, I have the automatic birthday calendar. The birthdays of people in my (Google) contact list will appear in my calendar. See the first attached image.
In Thunderbird, I have subscribed to my Google calendar (and Google contacts), but birthdays are duplicated in my Thunderbird (Google) calendar. See the second attached image. One birthday appears to be originating from the Google birthday (red) calendar, and one from my main/personal Google (green) calendar (which has two icons that I don't know the meaning of).
Why are birthdays being duplicated in Thunderbird?
In Thunderbird, I can resolve the issue by unchecking the option to 'Sync from <email address>' in the settings for the birthday calendar in my Google account. See the third attached image. This solves the problem for Thunderbird; see the fourth attached image. But then in my Google calendar, birthdays disappear. See the fifth attached image.
Is there a solution that allows the birthdays calendar to be synced correctly in both Google and Thunderbird without showing duplicates and without disappearing?