On XXIIVV, dates are written using a variance of the International Fixed Calendar.
The Equal Month calendar format has 13 months and so the number of each of these months are reflected into their names. Every month is 28 days long, and the 365th day of the year is the Year Day, followed by the Leap Day on leap years.
Time is written using a variance of the Internet Time with 4 digits instead of the Swatch Beat's 3 digits system. The system has no timezone and no daylight saving-time.