Not entirely abruptly. The downfall was seen back in 2018. I, like most listeners, simply didn't believe the transmission would end. Like a warm security blanket the signal has been a presence in my life since my earliest days.
"NRC ... spokesperson Orian Labrèche said CBC installed HD radio transmitters in 2018, which caused a delay of up to nine seconds in broadcasting the time signal. The council proposed several solutions and worked with CBC to solve the delay, but "ultimately, CBC/Radio-Canada made the decision to stop broadcasting the NRC's official time signal"
I am sad that the actual ending came with a whimper rather than a full-on cross-nation bang. A party to rival that of the final Tragically Hip concert. It certainly should have been handled better. A nation-wide listening party would have been monumental.
https://www.cbc.ca/news/canada/ottawa/cbc-stops-broadcasting...