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For either the Julian or Gregorian calendars, the beginning of the year should be treated as 1 January even if a different start-of-year date was observed in the place being discussed. Dates for Roman history before 45 BC are given in the Roman calendar , which was neither Julian nor Gregorian.
In every cycle there are 71 years with an additional 53rd week (corresponding to the Gregorian years that contain 53 Thursdays). An average year is exactly 52.1775 weeks long; months (1 ⁄ 12 year) average at exactly 4.348125 weeks/month. An ISO week-numbering year (also called ISO year informally) has 52 or 53 full weeks. That is 364 or 371 ...
1 Gregorian calendar year = 52 weeks + 1 day (2 days in a leap year) 1 week = 1600 ⁄ 6957 ≈ 22.9984% of an average Gregorian month In a Gregorian mean year, there are 365.2425 days, and thus exactly 52 + 71 ⁄ 400 or 52.1775 weeks (unlike the Julian year of 365.25 days or 52 + 5 ⁄ 28 ≈ 52.1786 weeks, which cannot be represented by a ...
Also anno Urbis conditae (AUC) ("in the year that the City [Rome] was founded"). For example, the year 2007 AD is the year 2761 ab Urbe condita (753 + 1 + 2007 = 2761); though, rigorously speaking, the year AUC begins on April 21, the birthday of Rome (i.e., the day that Romulus was traditionally believed to have founded the Eternal City). (The ...
See calendar and list of calendars for other groupings of years. See history , history by period , and periodization for different organizations of historical events. For earlier time periods, see Timeline of the Big Bang , Geologic time scale , Timeline of evolution , and Logarithmic timeline .
initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
A Gantt chart is a type of bar chart [4] [5] that illustrates a project schedule. [6] This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. [ 4 ] [ 7 ] The width of the horizontal bars in the graph shows the duration of each activity.
W/C: wheelchair: WD: well developed: WDL: within defined limits (as per hospital defined policy) WH: well hydrated (not dehydrated or hyperhydrated) WDWN: well developed and well nourished: WEE: Western equine encephalitis virus: WG: Wegener's granulomatosis (now known as granulomatosis with polyangiitis) WISC-R: Wechsler intelligence scale for ...