Change General preferences in Calendar on Mac
Use General preferences in Calendar to set day, week, and default calendar preferences. Also, select whether to show birthdays and holidays.
To change these preferences in the Calendar app on your Mac, choose Calendar > Preferences, then click General.
Default calendar app
Choose which calendar app to use when you open calendar (.ics) files or when you click weblinks to subscribe to calendars.
Days per week
Show five (Monday through Friday) or seven (Sunday through Saturday) days in Week view.
Start week on
The day on which to start the week in Week, Month, and Year view. If you change this option, it isn’t affected by subsequent changes to the “First day of week” option in Language & Region preferences.
Scroll in week view by
Scroll in Week view by days, weeks, or weeks with an additional stop on the current day.
Day starts at
The hour on which to start your days (between midnight and noon).
Day ends at
The hour on which to end your days (between noon and midnight).
Show __ hours at a time
How many hours to see in Day and Week view (between 6 and 24 hours).
The calendar where new events are added by default. If you choose “Selected calendar,” then the highlighted calendar in the Calendar list is the default calendar.
Show Birthdays calendar
Show the Birthdays calendar in Calendar. The Birthdays calendar displays birthdays that are in Contacts. To change the Birthdays calendar, edit the information in Contacts.
Show Holidays calendar
Show holidays for your region. For information about changing your region, see Customize formats to display dates, times, and more.
Show Siri Found in Apps calendar
Show the Siri Found in Apps calendar. Event details from known providers that you receive in other apps, such as Mail, automatically appear in this calendar as suggested events. For example, a suggested event appears when you receive a Mail message containing details about a flight, restaurant reservation, car rental, or similar event from a provider such as Expedia, Open Table, or Hertz.
To confirm a suggested event, simply add it to another calendar in the list.
Show alternate calendar
Show lunar calendar dates along with their Gregorian calendar equivalents.