Calendar

The Calendar app can connect to multiple online accounts and help you manage your work and personal schedules from a single place. It can also connect to publicly-available, cloud-based calendars for holidays, sports, and television.
Calendar works only with online accounts and calendars. You cannot use this app to create calendars and events that are local to your PC only. If you do not sign-in to Windows with a Microsoft account, as we recommend, you will need to add at least one online account to Calendar when you first launch the app.
Please refer to Email and Other Accounts to learn how you can configure accounts for use with the Calendar app.
Get to know the Calendar app
Calendar offers all of the usual date-based views found in other calendaring solutions and works largely as you'd expect.

Like many of the other apps that are included with Windows, Calendar's Navigation pane is collapsible. Just select the menu control, sometimes called a "hamburger," in the top left. When you do, the pane shrinks and displays only icons.

And yes, you can select this control again to expand the Navigation pane. You will need this pane open to access the Month control, and to determine which of the calendars---from your connected accounts and from the cloud---can be accessed from within the app and in other places in Windows.
Work with Calendar views
Calendar provides several views from which to choose. You select the view using the toolbar in the upper right of the app window.

The following views are available.

Day. This view displays the events that are occurring today.

Multi-day. It's a bit hidden, but Calendar also lets you pick from several multi-day choices---1, 2, 3, 4, 5, and 6-day views---by selecting a little drop-down control next to "Day" in the toolbar. and then choosing accordingly.

Week. This view displays an entire week of 7 days, from Sunday through Saturday by default. You can configure the first day of the week in Calendar settings as described in the section Customize Calendar.

Work week. As with the multi-day views, this choice is hidden in a drop-down menu, in this case next to the "Week" toolbar button. This view displays only the work week, which is Monday through Friday by default. You can change the days that constitute a work week in Calendar settings, as described in the section Customize Calendar.

Month. In this default Calendar view, you see the familiar grid-based month view of your schedule.

Year. Here, you will see the entire year in a single view, organized by month. Note that there are no events displayed in this view. If you select a month, Calendar will display that month in Month view.
Return to the current day
When you launch Calendar, it will display the current date in whichever view you've configured. But as you navigate around your schedule, you will often find yourself viewing other days.

To return to the current day in whatever view is currently configured,...