holidate
n.— «After a little research I discovered that National Smith Day was created in 1995 by “eventologist” Adrienne Sioux Koopersmith of Chicago. She’s created not just Smith Day but 1,499 other “holidates,” as she calls them.» —“A Smith and Lesson: Go ahead and make your day—today” by Ken Smith Post-Intelligencer (Seattle, Wash.) Jan. 6, 2005. (source: Double-Tongued Dictionary)
Further reading
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...
One of the celestial bodies listed in The Dictionary of Minor Planet Names(Amazon) is called Sumaura. It’s the name of the oldest private elementary school in Kobe, Japan, and was suggested by the discoverer’s son. This is part of a...