The calendar that is most common is the Adelunian Calendar. This will be the calendar most go by as not to confuse outsiders. Though each civilization in Revaliir does have their own calendar and way to do things.
Year 1 – Adeluna's founding
Primum – First month of the year
Attius – Second month, named after the first ruler of Adeluna
Crescere – Third month, when farmers begin to sow crops
Bellum – Fourth month, usually when war ramps up
Pluvia – Fifth month, beginning of the rainy season
Turbedo – Sixth month, stormiest time of the year
Calor – Seventh month, hottest time of the year
Autus – Eighth month, when crops grow fastest
Satius – Ninth month, when harvesting begins
Meti – Tenth month, when harvests wrap up
Pacem – Eleventh month, when wars often finish
Nix – Twelfth month, when snows are deepest
Ultima – Last month