I like /usr/pkg/bin/cal more than /usr/bin/cal since it's got reminders and all.I used Debian's patches to build and install it on my Arch desktop.
Speaking of calendars, there are two versions of BSD's calendar(1) on AUR.One is based on an older version of bsdmainutils from upstream Debian but with plenty of patches and calendar files (https://aur.archlinux.org/packages/calendar/).The other is a part of newer bsdmainutils from upstream Ubuntu (https://aur.archlinux.org/packages/bsdmainutils/ - also includes ncal).
The latter also has encoding issues.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko