Windows Calendar

Windows Calendar is the default calendar app in Windows Vista, Windows 8/8.1, Windows 10 and Windows 11.

Windows Vista
Windows Calendar on Vista supports sharing, subscribing, and publishing of calendars on WebDAV-enabled web servers and network shares. It supports .ics files, and the subscription feature enables syncing with Google Calendar. Its interface matches Windows Vista Mail. The default calendar can be renamed.

On the calendar taskbar applet, there is a date grid on the left side and a skeuomorphistic analogue clock and a digital clock underneath on the right side. Additional clocks displaying different time zones can be added to the view. On the date grid (left side), dates far in the past or future can be looked up by zooming out by clicking on the date range indicator above the calendar grid, until each tile is a decade (e.g. 2010-2019, 2020-2029)

Windows 7
Windows Calendar was removed from Windows 7 in favor of the built-in calendar functionality in Windows Live Mail.

Windows 8
Windows Calandar was brought back in Windows 8/8.1, but in Metro language form.

Windows 10
The Calendar app had some changes, but mostly follows the same Metro language design as its 8/8.1 counterpart.