Creating a Drood calendar

So there's 3 types of calendar: Solar calendar like the Gregorian calendar, Lunar calendar like the islamic calendar and Luni-Solar calendar like the chinese calendar. We going to choose the solar calendar.

So 1 day in game is 1 earth day and Droo's orbital period is 376 days, 8 hours, 33 minutes and 57 seconds. So we need to divide 8 hours, 33 minutes and 57 seconds which is 31437 seconds with a earth day which is 86400 seconds. Which equals 2.74835385055.

So rounding the number to the nearest year is 3 meaning that droods will have a leap year every 3 years.

Idk what years to skip a leap year so tell me on the comments but i calculated the year in days with decimals: 376.36385417.

Next part: The months

So Droo has 3 moons: Brigo, Luna And T.T The simple awnser Is Luna but will have it's problems, first, Luna orbits around Droo in 4.35 Earth days which is less than 29.5 days that the moon orbits around Earth. This WILL BE 86-87 MONTHS.
So caculating the Droo year with the T.T's Orbital Period will be around 39 months but more than a Gregorian month.

Neither the moons of Droo will be suitable for the months.

But if every Luna orbital in every month was 6. After crushing the numbers:

4.35*4 = 26.1 days per month
376/26.1 = 14.42 months per year.
376/14 = 26.857 - 26-27 days per month or in other words 12 27 day month and 2 26 day month. and once a leap year a 26 day month will have 27 days.

Hope that you helped alot.

(If jundroo doesn't add axial tilt why we choose the solar calendar to start with)