https://www.theregister.co.uk/2018/07/30/windows_nt_is_25/

Windows NT has hit an important milestone. Its launch is now closer to the first Moon landing than it is to today.

With its debut in July 1993, Windows NT ushered in a gloriously pure 32-bit future, free of the 16-bit shackles of the past. While the majority of PCs at the time were running MS-DOS, often with Microsoft's Windows 3.1 perched precariously atop, like a giant lemon balanced on a peanut, the kernel-based NT represented a stab at something entirely new.