Kalenterivuode
Kalenterivuode refers to a calendar year, a period of time defined by the Gregorian calendar. It begins on January 1st and ends on December 31st. Each kalenterivuode typically consists of 365 days. However, in a leap year, which occurs every four years with a few exceptions, the kalenterivuode extends to 366 days, with the extra day being February 29th. The concept of a kalenterivuode is fundamental to organizing time, marking events, and conducting historical records. It is used universally for administrative, legal, and personal purposes. The division into months, weeks, and days within a kalenterivuode provides a structured framework for human activities and planning. The transition from one kalenterivuode to the next is commonly celebrated as a New Year.