Part of bsdmainutils: <a href="https://github.com/pexip/os-bsdmainutils" rel="nofollow">https://github.com/pexip/os-bsdmainutils</a><p>I believe that, like "fortune", the intent was to provide useful/interesting info on login. The country-specific ones are more useful: <a href="https://github.com/pexip/os-bsdmainutils/blob/master/debian/calendars/calendar.unitedkingdom" rel="nofollow">https://github.com/pexip/os-bsdmainutils/blob/master/debian/...</a>