The unwritten (official) timestamp for Beings living and dealing with Natalis calculate their Age with the Natalis Recordings. The calendar has a year 0 set upon the event of a great earthquake that shook Natalis and broke the main continent in two pieces. Since then, 5038 years have passed.
On Natalis, a year takes 496 days, which are put into 16 months in total. Each month was named after events that usually take place in the more habitation favorable places, like Boreal and Scale. For instance, the Spring month "Thawwind" is the month in which the cold Winter air and the snow is blown away by the thawing winds of Spring.
The months "Upsol" and "Soldon" represent the months at which point the time of sunlight swaps; Upsol is the month in which the overall amount of sunlight per day starts to be larger than nighttime, while in Soldon, nights turn to be longer than days.
The following table shows the seasons, months and their respective amount of days.