Fahrenheit to Celsius
Canada uses the metric system of measurement. That means when your American friends ask you, "What does gas cost there?" you first have to convert litres to gallons, and then convert Canadian dollars to American dollars.
I ride a bike, and now I can finally think in terms of kilometres rather than miles. When my mother came to visit, I ordered 200 grams of turkey from the deli counter, and I think she was actually shocked. If you want to blend in with the locals, you have to make all kinds of conversions in your head. It takes some getting used to.
By far the strangest mental adjustment for me is not distance or volume but temperature. What do you wear when it's 28 degrees outside? If you're here, the answer is shorts and a t-shirt, because 28 Celsius is 82 Fahrenheit.
All the weather reports are in Celsius. In fact, we get the Seattle television network affiliates, and one of them gives the weather in Victoria, BC along with the Seattle area weather. Everything is in Fahrenheit except Victoria, which is in Celsius. Everything is in the 40's except Victoria, where it's 4.
For the longest time, I would listen to the weather forecast on the radio and have no idea what was in store. Then I found a trick. There are temperature palindromes!
16 degrees Celsius is 61 degrees Fahrenheit.
28 degrees Celsius is 82 degrees Fahrenheit.
04 degrees Celsius is 40 degrees Fahrenheit.
-11 degrees Celsius is 11 degrees Fahrenheit.
And I hope you'll never need to know that where the scales meet is -40 degrees. -40 is -40 no matter how you look at it.
Now of course this is Canada, eh? So although everything is supposed to be metric, you will find some things that just aren't, and you'll find some people who were pretty well grown before the supposed conversion took place just don't think metric. So while you wouldn't find people here ordering a quarter pound of turkey at a deli counter, in the meat section you'll find turkeys organized by "under 10 lbs" and "over 10 lbs." Go figure.