TimeTree's holiday calendars are set to appear as default, but can be selected and turned on from TimeTree's App Settings.
OS calendars' holiday calendars may appear when importing or syncing OS calendars into TimeTree, thus a chance to see two holidays (one from TimeTree, one from the OS calendar).
Follow these steps to prevent or have only one holiday show,
- Turn off TimeTree public holiday calendar from App Settings.
- Uncheck “Holiday Calendar” when copying from the OS calendar.
- Manually erase the holidays copied over from the OS calendar.
Keyword: duplicate, same holidays