Working Calendar
Scheduling Terms
Reviewed by forProject Technology - updated Sep 2026
Quick definition: A Working Calendar sets which periods are available for work, such as the working hours in a day, the working days in a week, and holidays or other non-working days.
A Task's Duration is counted in the working periods (typically days) of its Working Calendar. Some scheduling tools let you set Working Calendars for the whole project, for individual Tasks, and for Resources. Details vary by tool.
What this means for you
As each Task is scheduled, its Duration is applied to its Working Calendar to set its Finish Date. The same Duration can give different Finish Dates on different Working Calendars, so the Working Calendar assigned to a Task directly shapes the schedule.
Also known as
N/A
Used in
Schedule network calculation; Duration and Float calculations; resource availability modeling
FAQ
Does the Working Calendar affect float?
Yes. Total Float and Free Float are expressed in working time units, based on the assigned Working Calendar.
Definition maintained by forProject Technology.
© 2026 forProject Technology, Inc.
© 2026 forProject Technology, Inc.
