https://www.google.com/maps/place/59%C2%B054%2754.0%22N+10%C2%B044%2709.0%22E/@59.9149885,10.7352946,365m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0 PS.
Her er mer om dette:
http://www.uio.no/studier/emner/jus/jus/JUR1630/v15/timeplan/index.html#FOR