Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Doomsday_rule> ?p ?o }
- Doomsday_rule abstract "The Doomsday rule or Doomsday algorithm is a way of calculating the day of the week of a given date. It provides a perpetual calendar because the Gregorian calendar moves in cycles of 400 years.This algorithm for mental calculation was devised by John Conway after drawing inspiration from Lewis Carroll's work on a perpetual calendar algorithm. It takes advantage of each year having a certain day of the week (the doomsday) upon which certain easy-to-remember dates fall; for example, 4/4, 6/6, 8/8, 10/10, 12/12, and the last day of February all occur on the same day of the week in any given year. Applying the Doomsday algorithm involves three steps: Determine the "anchor day" for the century. Use the anchor day for the century to calculate the doomsday for the year. Choose the closest date out of the ones that always fall on the doomsday (e.g. 4/4, 6/6, 8/8), and count the number of days (modulo 7) between that date and the date in question to arrive at the day of the week.This technique applies to both the Gregorian calendar A.D. and the Julian calendar, although their doomsdays will usually be different days of the week.Since this algorithm involves treating days of the week like numbers modulo 7, John Conway suggests thinking of the days of the week as "Noneday" or "Sansday" (for Sunday), "Oneday", "Twosday", "Treblesday", "Foursday", "Fiveday", and "Six-a-day".The algorithm is simple enough for anyone with basic arithmetic ability to do the calculations mentally. Conway can usually give the correct answer in under two seconds. To improve his speed, he practices his calendrical calculations on his computer, which is programmed to quiz him with random dates every time he logs on.".
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- Doomsday_rule wikiPageExternalLink dd.cgi.
- Doomsday_rule wikiPageExternalLink doomsday.html.
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- Doomsday_rule wikiPageExternalLink dates.html.
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- Doomsday_rule wikiPageID "626579".
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- Doomsday_rule wikiPageWikiLink 7-Eleven.
- Doomsday_rule wikiPageWikiLink Algorithm.
- Doomsday_rule wikiPageWikiLink American_Civil_War.
- Doomsday_rule wikiPageWikiLink Anno_Domini.
- Doomsday_rule wikiPageWikiLink Astronomical_year_numbering.
- Doomsday_rule wikiPageWikiLink Calculating_the_day_of_the_week.
- Doomsday_rule wikiPageWikiLink Category:1973_introductions.
- Doomsday_rule wikiPageWikiLink Category:Calendar_algorithms.
- Doomsday_rule wikiPageWikiLink Category:Gregorian_calendar.
- Doomsday_rule wikiPageWikiLink Category:Julian_calendar.
- Doomsday_rule wikiPageWikiLink Christmas.
- Doomsday_rule wikiPageWikiLink Christmas_Day.
- Doomsday_rule wikiPageWikiLink Common_subexpression.
- Doomsday_rule wikiPageWikiLink Common_subexpression_elimination.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Friday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Monday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Saturday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Sunday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Thursday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Tuesday.
- Doomsday_rule wikiPageWikiLink Common_year_starting_on_Wednesday.
- Doomsday_rule wikiPageWikiLink Computus.
- Doomsday_rule wikiPageWikiLink Determination_of_the_day_of_the_week.
- Doomsday_rule wikiPageWikiLink Dominical_letter.
- Doomsday_rule wikiPageWikiLink Floor_and_ceiling_functions.
- Doomsday_rule wikiPageWikiLink Floor_function.
- Doomsday_rule wikiPageWikiLink Fort_Sumter.
- Doomsday_rule wikiPageWikiLink Gregorian_Calendar.
- Doomsday_rule wikiPageWikiLink Gregorian_calendar.
- Doomsday_rule wikiPageWikiLink Halloween.
- Doomsday_rule wikiPageWikiLink ISO_week_date.
- Doomsday_rule wikiPageWikiLink John_Horton_Conway.
- Doomsday_rule wikiPageWikiLink Julian_calendar.
- Doomsday_rule wikiPageWikiLink Julian_day.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Friday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Monday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Saturday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Sunday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Thursday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Tuesday.
- Doomsday_rule wikiPageWikiLink Leap_year_starting_on_Wednesday.
- Doomsday_rule wikiPageWikiLink Lewis_Carroll.
- Doomsday_rule wikiPageWikiLink March_0.
- Doomsday_rule wikiPageWikiLink Mental_calculation.
- Doomsday_rule wikiPageWikiLink Modular_arithmetic.
- Doomsday_rule wikiPageWikiLink Ordinal_date.
- Doomsday_rule wikiPageWikiLink Perpetual_calendar.
- Doomsday_rule wikiPageWikiLink Proleptic_Gregorian_calendar.
- Doomsday_rule wikiPageWikiLink Proleptic_Julian_calendar.
- Doomsday_rule wikiPageWikiLink Quotient.
- Doomsday_rule wikiPageWikiLink September_11,_2001_attacks.
- Doomsday_rule wikiPageWikiLink September_11_attacks.
- Doomsday_rule wikiPageWikiLink Solstice.
- Doomsday_rule wikiPageWikiLink Solstices.
- Doomsday_rule wikiPageWikiLink Working_time.
- Doomsday_rule wikiPageWikiLink World_Trade_Center_(1973-2001).
- Doomsday_rule wikiPageWikiLink World_Trade_Center_(1973–2001).
- Doomsday_rule wikiPageWikiLink Y2K.
- Doomsday_rule wikiPageWikiLink Year_2000_problem.
- Doomsday_rule wikiPageWikiLink Zellers_congruence.
- Doomsday_rule wikiPageWikiLink File:Doomsday_Rule.svg.
- Doomsday_rule wikiPageWikiLink File:John_H_Conway_2005.jpg.
- Doomsday_rule wikiPageWikiLink File:Odd+11_doomsday_flowchart.svg.
- Doomsday_rule wikiPageWikiLinkText "Doomsday rule".
- Doomsday_rule wikiPageWikiLinkText "doomsday".
- Doomsday_rule date "20061018103244".
- Doomsday_rule hasPhotoCollection Doomsday_rule.
- Doomsday_rule title "Poem explaining the Doomsday rule".
- Doomsday_rule url "http://www.cs.wustl.edu/~ksl2/mathpoem.html".
- Doomsday_rule wikiPageUsesTemplate Template:Citation_needed.
- Doomsday_rule wikiPageUsesTemplate Template:Clear.
- Doomsday_rule wikiPageUsesTemplate Template:Commons.
- Doomsday_rule wikiPageUsesTemplate Template:Reflist.
- Doomsday_rule wikiPageUsesTemplate Template:Wayback.
- Doomsday_rule wikiPageUsesTemplate Template:CURRENTYEAR.
- Doomsday_rule subject Category:1973_introductions.
- Doomsday_rule subject Category:Calendar_algorithms.
- Doomsday_rule subject Category:Gregorian_calendar.
- Doomsday_rule subject Category:Julian_calendar.
- Doomsday_rule hypernym Way.
- Doomsday_rule type Article.
- Doomsday_rule type Algorithm.
- Doomsday_rule type Article.
- Doomsday_rule type Calendar.
- Doomsday_rule comment "The Doomsday rule or Doomsday algorithm is a way of calculating the day of the week of a given date. It provides a perpetual calendar because the Gregorian calendar moves in cycles of 400 years.This algorithm for mental calculation was devised by John Conway after drawing inspiration from Lewis Carroll's work on a perpetual calendar algorithm.".
- Doomsday_rule label "Doomsday rule".
- Doomsday_rule sameAs Doomsday_rule.
- Doomsday_rule sameAs Doomsday-Methode.