Quick summary
Adding holidays to Microsoft Project ensures tasks are automatically rescheduled around non-working days, keeping your project schedule accurate. You do this by defining calendar exceptions in the Change Working Time dialog, so no manual date adjustments are needed.
Steps
- Open Microsoft Project and click on the Project tab in the top ribbon menu.
- Locate and click Change Working Time to open the holiday schedule settings.
- Click the Exceptions tab below the calendar view to access the holiday definition area.
- Click an empty row in the exceptions table, enter a descriptive holiday name, then set the start and finish dates.
- Click the Details button to access advanced customization options and define exactly how the holiday affects your schedule.
- Click OK to confirm — all tasks will automatically avoid those dates and get rescheduled.



