Environment Canada’s use of Celsius turns 50 years old in 2025.

It was the catalyst of a lengthy national metric conversion that abruptly ended a decade after it began.

A bone-chilling April Fools’ Day in 1975 marked the first time Canadians used Celsius to measure weather temperature.

  • @GCanuck
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    24 days ago

    Hmm. I also turn 50 this year. I don’t think I knew Canada’s Celsius use was the same age as me.