---
title: "Federated Calendar"
category: "Email and calendar"
tagline: "Manage your schedule on your Core's calendars, and invite people to events by email."
source: "pacman"
package: "federated-calendar"
packageUrl: "https://gitea.federated.computer/Federated_Computer/-/packages/arch/federated-calendar"
command: "federated-calendar"
replaces: ["Google Calendar"]
website: "https://coredesktop.computer/"
code: "https://gitea.federated.computer/Federated_Computer/federated-calendar"
links:
  - name: "Report an issue"
    url: "https://gitea.federated.computer/Federated_Computer/federated-calendar/issues"
  - name: "GNOME Calendar"
    url: "https://gitlab.gnome.org/GNOME/gnome-calendar"
---

## What it is

Federated Calendar is Federated Computer's calendar app for CoreDesktop. It's based on GNOME Calendar, so it looks and works like the rest of the GNOME desktop, and it works with the calendars on your Federated Computer Core.

What it adds is invitations. Add people to an event by email and your Core sends them the invitation, then any updates and cancellations, just as you'd expect from Google Calendar or Outlook.

## Why it's here

- **Invite people from your desktop.** You become the event's organizer, and your Core's Nextcloud emails the invitations when you save the event.
- **Your calendars stay on your Core.** No third-party calendar service in between.
- **Familiar.** It's GNOME Calendar underneath, with the same month, week and year views.

## On CoreDesktop

Federated Calendar comes from Federated Computer's own pacman repository, `[federated]`, which Federated Computer's Gitea serves and signs. The installer adds the repository to `/etc/pacman.conf` and trusts its signing key, then installs the package like any other. `update` adds the repository on computers installed before Federated Calendar, and keeps the app current with the rest of Arch.

It's installed alongside GNOME Calendar rather than replacing it, so look for **Federated Calendar** in the app grid.

To see your Core's calendars and invite people, run [`configure`](/utilities/#configure) first. It adds your Core's Nextcloud calendars to GNOME Online Accounts, and Federated Calendar picks them up from there.