Fun Fact of the Day:
Celsius is so foreign to Americans. Why is that? Well, because we use Fahrenheit. The formula to calculate F degrees is = C * 1.8 + 32 (remember PINK ELEPHANTS MARCH DOWN A STREET).
Now, only the U.S. (including its unincorporated territories), its freely associated states in the Western Pacific (Palau, the Federated States of Micronesia and the Marshall Islands), the Bahamas, Belize, and the Cayman Islands use F degrees.
All other countries in the world now use the Celsius scale, named after Swedish astronomer Anders Celsius, defined since 1954 by absolute zero being −273.15 °C and the triple point of water being at 0.01 °C.
Before 1954, the Celsius scale was based on 0 °C for the freezing point of water and 100 °C for the boiling point of water at 1 atm.