|Classic presentation on BBC1 N.I marked the occasion|
UTV and BBC One Northern Ireland marked the occasion by screening a special programme, entitled "The Magic Box" featuring Eamonn Holmes and X Factor voiceover supremo Peter Dickson alongside numerous TV personalities from Northern Irish TV history.
On BBC One, the Magic Box was the final Northern Irish programme in analogue - and for those lucky enough to be able to manually tune their satellite receivers - the first Northern Irish programme to be in HD.
BBC One Northern Ireland marked the evening by showing classic idents and presentation from the past decades, including the last incarnation of the BBC One clock, which used to be shown before every news programme.
At just after 11:30pm, the analogue signal was switched off on BBC One Northern Ireland after a special presentation showing the various BBC idents over the years, a DigitAl and a reference to BBC One HD Northern Ireland, put together by BBC Northern Ireland's Mark Simpson and Paul Reid.
UTV followed after an ad break, but clumsily showed viewers to visit the wrong website before going off air.
While the voiceover was correct, the website address shown on screen should have been www.digitaluk.co.uk
Channel 4 was next to have the plug pulled, in order for high powered digital services to be able to commence using its analogue frequencies.
Channel 5, which used different transmitters to the other analogue channels, remained on air longest.
Belfast's local TV station NvTV also went off air, but will return next autumn on Freeview channel 8, as part of the rollout of local TV across the UK over the next two years.
High powered digital signals replacing the analogue service will be rolled out across Northern Ireland during the course of today.
Irish Republic digital signals will be terminated by 10am, with high powered digital services expected to be up and running by 1pm - including a new high powered service carrying the Irish Saorview service from Clermont Carn transmitter well into Northern Ireland.
NORTHERN IRELAND DIGITAL SWITCHOVER