# JW Calendar
An offline-first calendar and date utility for Linux. Browse month and year layouts, inspect ISO week and day-of-year details, and convert civil dates without relying on an internet connection.
## Calendar tools
See month grids with Sunday or Monday week starts and a compact year view. The desktop window lets you move between months, select dates, and inspect date details beside the calendar.
## Command line
``` jwcalendar month 2027 1 jwcalendar year 2027 jwcalendar date 2027-01-01 jwcalendar day-of-year 2027-07-01 jwcalendar holidays 2027 ```
## Date conventions
Date arithmetic is timezone independent. ISO week-year boundaries follow ISO-8601. The Julian calendar, Julian Day Number, and ordinal day-of-year are separate tools with distinct labels. The holiday command lists US federal holidays and marks observed dates.
## Privacy
Calendar calculations run locally. No account is needed, and the app does not collect analytics or transmit personal calendar data.
## Calendar resources
Source code and support: [GitHub repository](https://github.com/karencohenjw/jwcalendar-linux) · [Report an issue](https://github.com/karencohenjw/jwcalendar-linux/issues).
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap is available for CentOS 7.6+, and Red Hat Enterprise Linux 7.6+, from the Extra Packages for Enterprise Linux (EPEL) repository. The EPEL repository can be added to your system with the following command:
sudo yum install epel-release
Snap can now be installed as follows:
sudo yum install snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install JW Calendar, simply use the following command:
sudo snap install jwcalendar
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.