Installation 1. Make sure the ASDF library is loaded. In SBCL, this involves: (require :asdf) 2. Add the path to the directory containing local-time.asd to asdf:*central-registry*. If you've installed this package using asdf-install, this shouldn't be necessary. (push "/my/local-time/directory/" asdf:*central-registry*) 3. Load local-time using ASDF: (asdf:oos 'asdf:load-op 'local-time) 4. In your own projects, you can direct asdf to automatically load LOCAL-TIME with the :depends-on asdf:defsystem directive. (defsystem myproject :depends-on (local-time) ...)