However the STV brand name refers to the on-air name used by Scottish Television for much of its history - notably in the 70s and early 80s. This name remained in conversational use amongst the local public afterwards. The modern STV brand was adopted on Tuesday 30 May 2006 replacing both franchises' previous identities. The sense of continuity in the name was demonstrated when STV celebrated its 60th birthday in 2017, with special programmes broadcast on STV itself and the now defunct STV2.