About the date format

When I write a date in a numerical format, like 2007-02-04, I use the format YYYY-MM-DD, where MM is the number of the month (between 01 and 12), and DD is the day of the month (between 01 and 31). This date format is recommended by the ISO:
Numeric representation of Dates and Time
The ISO solution to a long-standing source of confusion

  Niels Dekker, 2008-10-29