#CALENDAR BY WEEK NUMBER ISO#

Professionals working in the business sector set up their business appointments based on the calendar weeks. The calendar weeks serve different purposes. This day and god were extremely important to the ancient Romans. Sunday Sunday is named after the sun god Sol (lat. The Romans named the day after the Roman god of seed Saturn (lat. Saturday Saturday is derived from the Jewish Sabbath. dies veneris) and the Germanic goddess of love and marriage Freya. dies iovis).įriday Friday is derived from the Roman goddess of beauty Venus (lat. Thursday Thursday is named after the Germanic god of thunder Thor and the Roman god Jupiter (lat. dies mercoledi) and the Germanic god Wotan. Its name is derived from the Roman god Mercuris (lat. Wednesday Wednesday is also referred to as midweek. dies Martis) and the Germanic god of war Tyr. Tuesday Tuesday comes from the name of the Roman god of war Mars (Lat. Monday Monday is named after the Roman goddess Luna (lat. The Germanic peoples later translated each Roman god from Latin into Germanic. The Romans considered the sun and the moon planets as well. The Romans named the days after their gods, the seven ancient planets (Sun, Moon, Mars, Mercury, Jupiter, Venus and Saturn). In addition, years that are divisible by 100 but not by 400 are not leap years, as is the case with 1700, 1800, and 1900. To compensate for this inaccuracy, an extra day - February 29 - was introduced every four years. Christmas would end up being sometime in the summer. The earth rotates 365 days and 6 hours around the sun, which is longer than the standard calendar year. Why does a leap year have one day more than a normal year? When a normal year starts on a Thursday and also ends on one, it is 53 weeks long.Ī leap year also consists of 53 calendar weeks, beginning either on a Wednesday and ending on a Thursday or starting on a Thursday and ending on a Friday. The fourth of January is always in the first WN.Ī standard year has 52 weeks if it is not a leap year.The first calendar week starts with the first four days of the new year.There are no incomplete calendar weeks every week has exactly seven days.A new calendar week (week number) always begins on Monday.In countries such as the USA, Mexico, Australia and Canada the weeks start with Sunday as the first day of the week and end on Saturday. Since 1976 every week has started on a Monday and ended on a Sunday.

The German-language calendar is not an exception.

#CALENDAR BY WEEK NUMBER ISO#

The international standard ISO 8601 is used to display the date and time. The calendar sets periods of time by combining days into weeks, weeks into months and months into years.

Calendar by week number