How to automatically add birthdays to Google Calendar and never forget a big day again

Once you set up a birthday in Google Contacts, it is automatically synced to your Google Calendar.
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Birthdays in Google Calendar come from details in your Google Contacts.
When you set up a birthday in Google Contacts, it is automatically added to your Google Calendar.
To see birthdays in Google Calendar, check the "Birthdays" calendar box under the "My calendars" dropdown menu.Visit Insider's Tech Reference library for more stories.
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