## Calendar class

Represents a calendar used in a project.

The Calendar type exposes the following members:
## Properties
| Name | Description |
| :- | :- |
|name|Gets or sets the name of the calendar.|
|uid|Gets or sets the unique identifier of the calendar.|
|week_days|Gets WeekDaysCollection for this calendar.<br/>            The collection of weekdays that defines the calendar.|
|exceptions|Gets CalendarExceptionCollection object.<br/>            The collection of exceptions that is associated with the calendar.|
|work_weeks|Gets WorkWeekCollections object.<br/>            The collection of work weeks that is associated with the calendar.|
|is_base_calendar|Gets a value indicating whether the calendar is a base calendar.|
|base_calendar|Gets or sets the base calendar on which this calendar depends.<br/>            Only applicable if the calendar is not a base calendar.|
|is_baseline_calendar|Gets or sets a value indicating whether the calendar is a baseline calendar.|
|guid|Gets calendar's Guid.|
|primavera_properties|Gets an object containing Primavera-specific properties for a calendar read from Primavera formats.|
## Methods
| Name | Description |
| :- | :- |
|get_start_date_from_finish_and_duration(finish, duration)|Returns start date based on the specified finish date and duration.|
|get_start_date_from_finish_and_duration(finish, duration)|Returns start date based on specified finish date and duration.|
|get_working_hours(start, finish)|Return WorkUnit - Start, Finish and Duration of working hours for the specified date time interval.|
|get_working_hours(dt)|Return WorkUnit - Start, Finish and Duration of working hours for the specified date time interval.|
|get_finish_date_by_start_and_work(start, work)|Calculates the date when the specified amount of work time will pass according to the calendar.|
|get_finish_date_by_start_and_work(start, work)|Calculates the date when the specified amount of work time will pass according to the calendar.|
|get_intersection_calendar(calendar1, calendar2)|Gets [ICalendar](/tasks/python-net/aspose.tasks/icalendar/) instance which can be used to perform calculations on the intersection of work schedules of 2 calendars.|
|make_standard_calendar(calendar)|Creates default standard calendar.|
|make_24_hour_calendar(calendar)|Makes a given Calendar to be a 24Hour Calendar.<br/>            24Hours Calendar is a Calendar in which every day of week is working with Round-the-clock working hours.|
|make_night_shift_calendar(calendar)|Makes a given Calendar as Night Shift Calendar.|
|delete()|Removes calendar from project.|
|is_day_working(dt)|Determines whether the specified day is a working day according to the calendar.|
|get_working_hours_time_span(start, finish)|Returns amount of working hours between the specified dates.|
|get_task_finish_date_from_duration(task, duration)|Calculates the task finish date and time from its start date, split parts and the work duration.|
|get_working_times(dt)|Returns [WorkingTimeCollection](/tasks/python-net/aspose.tasks/workingtimecollection/) of working times for the specified date.|
|get_previous_working_day_end(date)|Calculates the end of the previous working date from the specified date.|
|get_next_working_day_start(date)|Calculates next working day start for the specified date.|
|get_work_start(date)|Calculates next working time start beginning from the specified date and time.|
|is_empty()|Returns whether the calendar doesn't have working hours defined.|

### See Also

* namespace [aspose.tasks](/tasks/python-net/aspose.tasks/)
* assembly [Aspose.Tasks](/tasks/python-net/)