The AddHoliday command updates a given calendar by adding a given date as a holiday.

The parameter date must be a date specified in any of the formats recognized by the ParseDate command.

The parameter calendar must be either a name representing a supported calendar or a calendar data structure created using the Calendar constructor.

$\mathrm{with}\left(\mathrm{Finance}\right)\:$

$C≔\mathrm{Calendar}\left(\mathrm{Simple}\right)$

$C≔\mathbf{module}\left(\right)\mathbf{end\; module}$

$\mathrm{Holidays}≔\left[''January\; 22,\; 2004''\,''January\; 23,\; 2004''\,''January\; 24,\; 2004''\,''January\; 25,\; 2004''\,''January\; 26,\; 2004''\,''January\; 27,\; 2004''\,''January\; 28,\; 2004''\right]$

$\mathrm{Holidays}≔\left[''January\; 22,\; 2004''\,''January\; 23,\; 2004''\,''January\; 24,\; 2004''\,''January\; 25,\; 2004''\,''January\; 26,\; 2004''\,''January\; 27,\; 2004''\,''January\; 28,\; 2004''\right]$

$\mathrm{AddHoliday}\left(C\,\mathrm{Holidays}\right)$

$\mathrm{IsHoliday}\left(''January\; 23,\; 2004''\,C\right)$

$\mathrm{true}$

$\mathrm{AdjustDate}\left(''January\; 23,\; 2004''\,C\,\mathrm{convention}=\mathrm{Following}\,\mathrm{output}=\mathrm{formatted}\right)$

$''January\; 29,\; 2004''$

$\mathrm{AdjustDate}\left(''January\; 23,\; 2004''\,C\,\mathrm{convention}=\mathrm{Preceding}\,\mathrm{output}=\mathrm{formatted}\right)$

$''January\; 21,\; 2004''$

The Finance[AddHoliday] command was introduced in Maple 15.

For more information on Maple 15 changes, see Updates in Maple 15.