An organisation of folders that includes 31 folders for the days of the month and 12 folders for the months of the year. Usually arranged so that if today is September 8, the folders will appear in the following order:

• Day folders 8 through 31 (representing dates in September; don't worry about the 31st being redundant!)
• Month folder for October
• Day folders 1 through 7 (representing those dates in October)
• Month folders November through September (representing the upcoming year)