Determination of the Day of the Week

Determination of the Day of the Week

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A typical application is to calculate the day of the week on which someone was born or some other special event occurred. To determine the day of the week from numerical operations, it is necessary to represent Sunday to Saturday as numbers. This is achieved with arithmetic modulo 7. Modulo 7 is an operation that calculates the remainder of a number being divided by 7. Thus we can treat 7 as 0, 8 as 1, 9 as 2, 18 as 4 and so on; the interpretation of this being that if we signify Sunday as day 0, then 7 days later is also a Sunday, and day 18 will be the same as day 4, which is a Thursday since this falls 4 days after Sunday. The basic approach of nearly all of the methods to calculate the day of the week begins by starting from a known pair, determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical days of the week.show more

Product details

  • Paperback | 84 pages
  • 152 x 229 x 5mm | 136g
  • Onym Press
  • United States
  • English
  • black & white illustrations
  • 6135652389
  • 9786135652383