Create a new base calendar

Project includes a few different base calendars, by default:

  • Standard: 8AM to 5PM, with a one-hour lunch break at 12PM.

  • 24 Hours: 12AM to 12AM, every day.

  • Night Shift: 11PM to 8AM, with a one-hour break at 3AM.

If these calendars aren't quite working, you can adjust them for your project, or create a new base calendar that others can also use.

Important: Using Project with Project Web App? If so, check with your administrator to request changes to base calendars.

  1. Click Project > Properties > Change Working Time.

    Change Working Time

    Note: Using Project 2007? Click Tools > Change Working Time.

  2. Click Create New Calendar.

    Create New Calendar

  3. Give the new calendar a Name, select Create new base calendar, and then click OK.

    Create New Base Calendar

  4. Click the Work Weeks tab, and then click Details.

    Work Weeks tab

    Note: What about holidays? Use the Exceptions tab to add holidays to your schedule. Learn more.

  5. Select the day(s) that you want to change the working times for, and then choose whether you want them to be working or nonworking time.

    Select days and working or nonworking

  6. If you chose Set day(s) to these specific working times, use the From and To columns to set the working times for the selected days.

    Set working times

  7. Click OK to return to the Change Working Time dialog box, and then click OK again.

To make your new base calendar available for other projects to use, save the project as a template so this work schedule will be there for every new project created with that template. If you're using Project with Project Web App, contact your administrator to request changes to the base calendars for your entire organization.

What else can I do with calendars?

Project enables you to fine-tune scheduling using multiple calendars. If you understand how they all work together, it's easier to plan for how your project's dates will be impacted. Here are a few more articles you might find helpful in building a more accurate picture of the working and nonworking days in your organization.

Set the general working days and times for a project
Add a holiday to the project calendar

Set a unique schedule for a specific task

Set a unique schedule for a specific resource
Add a resource's vacation time
Change resource availability without using a calendar

Tip: If you don't need a calendar anymore, delete it!

Expand your Office skills
Explore training
Get new features first
Join Office Insiders

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.