Full page newspaper ad by the Canada Metric Commission. Didn't work - most Canadians are mixed up between SI and Imperial measurements. Say Goodnight to Fahrenheit 'Tomorrow morning when you get up and turn on the radio or open the paper there will be no more Fahrenheit in the weather forecasts and temperature reports. Because April 1, 1975 is the day that Canada officially adopts degrees Celsius to measure these temperatures. Using degrees Celsius is one step in Canada's gradual conversion to the metric system. Once we're used to the new terms, using the metric system will make measuring anything simpler and more logical. Also, since our world is already 90% metric, we have to change now to stay competitive in international markets. The easiest way to learn the them is to use them. Live them. Think them. Talk them. 'And don't convert back.'
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