What should you do to check for duplicate calendars on a Mac?

Checking iCloud.com for duplicates is the best approach when trying to find duplicate calendars on a Mac. This is because iCloud serves as the central repository for all your calendar data if you are syncing your calendars through it. By logging into iCloud.com, you can view all your calendars directly, allowing you to identify any duplicates that may be present.

This method is particularly useful in resolving duplication issues, as it gives you a straightforward visual overview of all calendars associated with your Apple ID, making it easier to manage them effectively. Furthermore, if duplicates exist, you can take appropriate actions directly from iCloud.com to resolve the issue, such as deleting or merged calendars.

Other choices do not directly address the problem of checking for duplicate calendars effectively. Although restarting the calendar app might refresh the data view, it won't help identify duplicates. Contacting Apple Support may be useful for complex issues but is not a necessary step for identifying duplicates. Resetting the Mac settings is an extensive step and could lead to data loss or further complications, making it not a practical solution for simply checking for duplicate calendars.