The lunar calendar is one of the three common calendar system in use, it is determined based off the cycles of the three moons of the planet, it is also the calendar that features the shortest years.
Structure
The lunar calendar is divided in 5 periods, each divided in 4 months of 15 days each.
A full year corresponds to the passage of all the phases of Bigger Moon, while a period is determined by the passage of all the phases of Medium Moon, with the months (Novilune, Demilune, Plenilune and Medilune) being the phases of the same moon, each month contains exactly 3 phases of Smaller Moon.
Due to being exclusively spelled by the moons, it is possible to discern an approximate date by looking at the lunar phases.
The lunar calendar
Alignment
To make it easier to discern the date while looking at past events, the calendar resets its years every time the moons align, so to make the year discernible by the alignment of the moons.
Usage
The lunar calendar is the officially used calendar for this countries: