RickDate

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RickDate is a compressed date format using a base 36 numeral system to represent a date using a minimal amount of characters.

RickDate has two forms; a long form using five characters, and a short form using three characters.

In the long form, each component of the date is represented as a base-36 number, and the three components are concatenated together in Year-Month-Day order (YYYMD).

The short form, using only the last base-36 digit of the year, is preferred for its compactness, although a context is usually needed to determine the intended year. For example, the RickDate format of September 20, 2006 is 1JQ9K, or Q9K for short.

RickDate was invented in December 1985, and is named after its originator, Rick Wong. ^[1]