Users can enable or disable the visibility of special calendars, including Birthdays, where the app retrieves dates of births from Google contacts and displays birthday cards on a yearly basis, and Holidays, a country-specific calendar that displays dates of special occasions. Event locations can also be added, and other users can be invited to events. Reminders can be enabled for events, with options available for type and time.
Google Calendar allows users to create and edit events. It became available in beta release April 13, 2006, and in general release in July 2009, on the web and as mobile apps for the Android and iOS platforms. Google Calendar is a time-management and scheduling calendar service developed by Google.