jburkardt

WEEKDAY\ Determine the Day of the Week {#weekday-determine-the-day-of-the-week align=”center”} =============================


WEEKDAY is a C++ library which can determine the day of the week corresponding to a given date; for instance, the battle of Hastings, on 14 October 1066 (Julian Calendar!), was a Saturday.

Licensing: {#licensing align=”center”}

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages: {#languages align=”center”}

WEEKDAY is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.

CALENDAR_NYT, a FORTRAN90 library which shows the correspondence between dates and the New York Times volume and issue number;

CALENDAR_RD, a C++ program which computes the representation of a given date in a number of calendrical systems, by Edward Reingold, Nachum Dershowitz

CALPAK, a C++ library which makes various calendar calculations;

DATES, a dataset directory which contains lists of dates in various calendar systems.

DOOMSDAY, a C++ library which is given the year, month and day of a date, and uses John Conway’s doomsday algorithm to determine the corresponding day of the week.

TEST_VALUES, a C++ library which supplies test values of various mathematical functions.

Reference: {#reference align=”center”}

  1. Lewis Carroll (Charles Dodgson),\ To Find the Day of the Week for Any Given Date,\ Nature, 31 March 1887.
  2. Gary Meisters,\ Lewis Carroll’s Day-of-the-Week Algorithm,\ Math Horizons,\ November 2002, pages 24-25.
  3. Edward Reingold, Nachum Dershowitz,\ Calendrical Calculations: The Millennium Edition,\ Cambridge University Press, 2001,\ ISBN: 0-521-77752-6,\ LC: CE12.R45.
  4. Edward Richards,\ Mapping Time, The Calendar and Its History,\ Oxford, 1999,\ ISBN: 0-19-850413-6,\ LC: CE11.R5.

Source Code: {#source-code align=”center”}

Examples and Tests: {#examples-and-tests align=”center”}

List of Routines: {#list-of-routines align=”center”}

You can go up one level to the C++ source codes.


Last revised on 25 March 2010.