helmicentury
Helmicentury is a term that has gained some traction in discussions related to historical periods and the concept of a hundred-year span. It refers specifically to a century that begins with the year ending in "00". For example, the 20th century, which ran from 1901 to 2000, is often discussed in contrast to a "helmicentury" if one were to consider the period from 1900 to 1999. The term itself is not widely recognized in academic historical discourse and appears more commonly in informal or speculative contexts online.
The distinction arises from different ways of defining a century. Traditionally, a century is understood as