Windows 10 to Remove Seconds from Taskbar Calendar in Upcoming Update

In the upcoming Windows 10 update scheduled for April 8, 2025, the seconds display will be removed from the Calendar pop-up on the taskbar. This change has already been introduced in the optional update Windows 10 KB5053643, according to Windows Latest.

By default, seconds are not shown on the Windows 10 taskbar clock. However, users can still view the seconds by expanding the Calendar. In Windows 10 KB5053643 and later versions, clicking on the time and date on the taskbar still brings up the Calendar pop-up, but it will no longer display seconds, as discovered by Windows Latest during their testing. In this update, the date and day of the week occupy all the space where the time previously was shown.

Microsoft has stated that displaying seconds in the graphical interface adversely affects performance, as «periodic activity prevents the CPU from entering a low-power state.» For the same reason, Windows 11 initially did not include seconds in the taskbar calendar, but Microsoft addressed this issue following user feedback.

Microsoft has strongly recommended that Windows 10 users upgrade to Windows 11, warning that Microsoft 365 applications may cease to function entirely if users do not update. Support for the Windows 10 operating system will conclude in October 2025.