A standard year, without a leap year, consists of 52 weeks. A week is a time unit consisting of seven days. There 365 days in a year, 52 weeks in a year and 12 months in a year. Year’s that begin on a Thursday and leap years that begin on a Wednesday have 53 weeks. In most parts of the world the week is the accepted time period used for work and rest days schedule.
Sometimes the term “week” is expanded, referring to other time units consisting of days, for instance, historically a week consisting of 4-10 days has been used in different parts of the world. A period of time consisting of more than days is not typically termed as a “week” since it is closer to a fortnight (a unit of time equal to fourteen days or two, seven day weeks) or a month.
The origin of the English word “week” is derived from the Old English term “wice” which stems from a Germanic term “wikon” from the root “wik.” The term “wik” means to “move, turn or change.” Prior to the acceptance of the Roman calendar, the word “wik” may have had other meanings such as a “series of successions.”
There is evidence of people using a seven day week dating back to the Jews of the 6th century BC during the Babylonian Captivity. Both Babylonian religions and Judaism used a seven-day week for the organization of a time schedule.