20091223

20091223 is a numeric date string written in the YYYYMMDD format, representing December 23, 2009, in the Gregorian calendar. The date fell on a Wednesday. The year 2009 was not a leap year, and December 23 sits near the end of the calendar year.

In computing and data management, 20091223 is commonly used as a compact, sortable date key. The eight-digit format allows lexicographic ordering to reflect chronological order, which is advantageous for file naming, logs, backups, and database keys. When human readability is preferred, the date is often converted to 2009-12-23, following ISO 8601 conventions.

The string may appear as an identifier in datasets, version labels, or event codes where the date aspect is relevant, but on its own it does not convey any particular event or meaning beyond the date. Its interpretation depends on the surrounding context, such as documentation, software, or data schemas.

See also: ISO 8601, YYYYMMDD date format, 2009, December 2009, date and time representations.