Factory calendar in SAP

General introduction about the factory calender and how to get the dates validated based on calender key 

If a public holiday calendar or a factory calendar is set, the non-working days in the relevant region or in the company are highlighted in color in the calendar display and are not included in the search for appointments. By default, a calendar that does not contain public holidays is assigned to the appointment calendar.

Tcode--> SCAL

 click display

Based on the calendar key T001W-FABKL get the valid from and valid to date for a plant.

Example: - Suppose get the factory calendar for a plant in organization

First get the cost centre for the org unit à get the business area and company code àget the plant àget the key from table T001W (  Plants/Branch)