20032011

20032011 is an eight-digit numeric string used in various contexts as a compact date representation or identifier. In many locales it is read as a date in day-month-year order, representing 20 March 2011. The sequence can also appear as a shorthand for a time span when used without separators, suggesting a period from 2003 to 2011 in lists that omit punctuation.

Date formats vary by region. As ddmmyyyy, 20032011 corresponds to 20/03/2011; in ISO 8601 the equivalent would be 2011-03-20; in the United States, mmddyyyy would read as 03/20/2011. Without separators, the intended meaning depends on the surrounding documentation or locale, making interpretation potentially ambiguous.

In computing and data management, 20032011 may function as a timestamp, a filename stamp, or a batch or version code. Its lack of separators makes automated parsing error-prone if the parsing rules are not defined, and it can cause confusion across systems that assume different date conventions.

See also: date notation, ddmmyyyy, mmddyyyy, yyyymmdd, ISO 8601.