The Relationship Between Playing Cards and a Calendar

The red cards implies noon, and the black cards implies night.

The club cards implies spring, the diamond cards implies summer, the heart cards implies fall, and the spade cards implies winter.

The thirteen cards implies thirteen weeks of each season.

That is to say, the number of playing cards implies that a year is fifty two weeks.

Furthermore, the sum of all of the playing cards’ number is 364.

If we add a joker card here, it will become 365.

A spare joker card implies leap year.