24 year old dating 12 year old model in china Free video sex chating with girls without any registration
Latin calendarium meant "account book, register" (as accounts were settled and debts were collected on the calends of each month).
The Latin term was adopted in Old French as calendier and from there in Middle English as calender by the 13th century (the spelling calendar is early modern).
The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronised with the solar year over the long term.
The first calendar reform of the early modern era was the Gregorian calendar, introduced in 1582 based on the observation of a long-term shift between the Julian calendar and the solar year.
A full calendar system has a different calendar date for every day.
Thus the week cycle is by itself not a full calendar system; neither is a system to name the days within a year without a system for identifying the years.
A date is the designation of a single, specific day within such a system.
A calendar is also a physical record (often paper) of such a system.
A calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills.