Over a decade ago, I noted that early beta versions of the taskbar clock showed seconds, and sometimes even blinked the colon like some clocks do, but it was removed because the blinking colon and updating time were ruining Windows 95’s benchmark numbers due to the need to keep all of the code paths related to text rendering in memory, as well as the stack of the thread in the Explorer process that updates the clock.

Even though computers are not under the same tight memory constraints as Windows 95, the taskbar still does not show seconds because Terminal Services would have hundreds of updating clocks, and even on single-user systems, the energy efficiency team gives the side-eye to any timer that runs faster than once per minute.

But finally, in 2023, the Taskbar added an option to show seconds. The option is however disabled by defau