ddate software package provides convert Gregorian dates to Discordian dates, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ddate
ddate is installed in your system.
Make ensure the ddate package were installed using the commands given below,
$ sudo dpkg-query -l | grep ddate *
You will get with ddate package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Utilities |
| Package | ddate |
| Version | 0.2.2-1 |
| Description | convert Gregorian dates to Discordian dates |
| Sub Section | Utils |