Anniversary names

The Latin phrase dies natalis (literally birth day) has become a common term, adopted in many languages, especially in intellectual and institutional circles, for the anniversary of the founding ("legal or statutory birth") of an institution, such as an alma mater (college or other school). Even in ancient Rome, we know of the [dies] Aquilae natalis ("birthday of the eagle", anniversary of the official founding of a legion).

Most countries around the world celebrate national anniversaries, for example the United States Bicentennial. These could be the date of independence of the nation or the adoption of a new constitution or form of government. The important dates in a sitting monarch's reign may also be commemorated, an event often referred to as a 'Jubilee'.

Anniversaries of nations are usually marked by the number of years elapsed described with Latin words or Roman numerals.

[edit] Latin-derived numerical names

The root elements of each word are literally multiplied together to create the anniversary name. For example, the word sesquicentennial (an anniversary of 150 years) is broken down as sesqui- (1) x centennial (100 years). Sometimes new anniversary names are coined incorrectly by adding the root elements rather than multiplying them, with unfortunate results.

Quarto =

Sept = 7

So, Quartosept = () * 7 = 7/4

And then quartoseptentennial = (7/4) * 100 = 175


(7/4)*100 = 174

Quarto = 1/4

Sept = 7