Balinese Calendar System is different than another calendar system. Most people know of two kinds of calendar system: the Solar System and the Lunar System. The Solar system , mostly used internationally, is based on how many days the earth rotates around the sun ; so one year has an average 365 days. The Lunar System ( used in some Asian countries, is based on the time taken by the moon to rotate around the Earth ; which is 29 days + 12 hours + 44 minutes so that equation times 12 equals 1 year for the lunar system.
Bali uses yet another calendar system.
Bali uses the wuku System ( based on the week . There are 30 weeks in one cycle (Balinese : oton)and two Otons in one year, so one Oton means 210 days and one year in the Balinese Calendar System is two Otons or 420 days).
The Balinese Calendar system is used mainly for religious purposes such as : to know the auspicious days for farming & raising animals, starting a Bussiness, determining the dates of temple ceremonies, and making birthday ceremonies (otonan) and others.(ruslan)


