---
title: "Project calendars"
slug: "bc-project-calendars"
description: "Set project calendars in Microsoft Dynamics 365 Business Central to manage working days, templates, and customized entries for efficient project planning."
updated: 2026-06-25T09:59:11Z
published: 2026-06-25T09:59:11Z
canonical: "docs.staedean.com/bc-project-calendars"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.staedean.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Project calendars

Project task starting and ending dates are based on the number of working days estimated for the project task. Non-working days are set with the project calendar. The project calendar is based on the standard Microsoft Dynamics 365 Business Central functionality around base calendars and customized calendar entries and sets the non-working days for a project.

Set project calendars in the following places:

- **Projects Setup**: the default setting for project calendars is in the Projects Setup. Type **Projects Setup** in the search box to open the page and navigate to the **Advanced** tab. Select a base calendar code here (see the standard functionality on how to create and maintain base calendars). Customized calendar entries can also be created specifically for projects. In this way, one company calendar can be used for projects, service, and sales, each with its own set of customized entries. The calendar in Projects Setup is the default and is overruled by each of the following settings.
- **Project template**: type **Project Template** in the search box to open the project template. Each template supports a base calendar code and customized calendar entries. This makes it possible to set different calendars for different types of projects based on the template they are copied from.
- **Project**: open a **Project card** and note the **Base Calendar Code** and **Customized Calendar Entries**. These settings are copied from the Projects Setup, which is overruled when a base template is copied, or can be entered manually specifically for the project.

## Set up base calendars

Project calendars are based on the standard [Base calendar](https://learn.microsoft.com/en-us/dynamics365/business-central/across-how-to-assign-base-calendars).

## Related

- [Budget, timeline, register and forecast](/bc-budget-timeline-register-and-forecast.md)