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  2. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    Doomsday rule. The doomsday's anchor day calculation is effectively calculating the number of days between any given date in the base year and the same date in the current year, then taking the remainder modulo 7. When both dates come after the leap day (if any), the difference is just 365y + ⁠ y / 4 ⁠ (rounded down). But 365 equals 52 × 7 ...

  3. Dominical letter - Wikipedia

    en.wikipedia.org/wiki/Dominical_letter

    The "doomsday" concept in the doomsday algorithm is mathematically related to the Dominical letter. Because the letter of a date equals the dominical letter of a year (DL) plus the day of the week (DW), and the letter for the doomsday is C except for the portion of leap years before February 29 in which it is D, we have:

  4. Determination of the day of the week - Wikipedia

    en.wikipedia.org/wiki/Determination_of_the_day...

    The basic approach of nearly all of the methods to calculate the day of the week begins by starting from an "anchor date": a known pair (such as 1 January 1800 as a Wednesday), 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 day of the week.

  5. Category:Calendar algorithms - Wikipedia

    en.wikipedia.org/wiki/Category:Calendar_algorithms

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  6. big.assets.huffingtonpost.com

    big.assets.huffingtonpost.com/Aguttes29092012BD.pdf

    %PDF-1.6 %âãÏÓ 673 0 obj > endobj xref 673 26 0000000016 00000 n 0000003169 00000 n 0000003288 00000 n 0000003417 00000 n 0000003920 00000 n 0000004034 00000 ...

  7. Perpetual calendar - Wikipedia

    en.wikipedia.org/wiki/Perpetual_calendar

    Breguet classique Grand complication perpetual calendar. Offices and retail establishments often display devices containing a set of elements to form all possible numbers from 1 through 31, as well as the names/abbreviations for the months and the days of the week, to show the current date for convenience of people who might be signing and dating documents such as checks.

  8. after - highline.huffingtonpost.com

    highline.huffingtonpost.com/miracleindustry/...

    ExecutiveSummary Overview The missIOn ofthe Center is to create acommon ground for a strategic collaboration between Johnson & Johnson (J&J) a.nd the Pediatric Rt'search Program an at the

  9. Top 9 benefits of 529 education savings plans - AOL

    www.aol.com/finance/top-9-benefits-529-education...

    The new rules also allow for the use of 529 plan distributions in apprenticeship programs. Apprenticeships are now considered a qualified higher education expense if the apprenticeship is ...