Oster-Mega-Hit-Marathon
Translates as Easter Mega Hit Marathon. Since 1989 every Easter the station has a marathon where they play 800 "Mega Hits" over 24–48 hours during Easter. It is usually held in the biggest arena in Hamburg, the Volksparkstadion, which is the stadium of the local football team Hamburger SV, but in the last years, it was held on the street next to the station, with a big stage.
Read more about this topic: Radio Hamburg