The WorkdayCalendar and Workdate objects allows to perform date calculations on a calendar that considers workdays (also called "business days").

Built on top of the Date datatype, it uses a calendar file to specify how many days a workweek has and what are the days considered holidays.

By default, the workweek is composed by Monday, Tuesday, Wednesday, Thursday, Friday. And Saturday and Sunday form the weekend.

Though most countries has the workweek of Monday to Friday, some have very different ones.

More information about workweeks can be found at http://en.wikipedia.org/wiki/Workweek

Detailed documentation is available at https://github.com/shinobi/Date-WorkdayCalendar/wiki

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