The Demarian calendar

In Demaria, there are 365 days in the year. Just like us. But they structured the year differently than we did.

There are 13 months in the year, and each month is exactly 28 days. (28 x 13 = 364 days)

Plus an extra day for the Winter Festival. (364 + 1 = 365 days)

Every four years, the Winter Festival has an extra day for games. (365 + 1 = Leap Year)