Points on that meridian are called freezing points,
especially where it crosses water.
0 longitude is the prime meridian. 0 latitude is the equator.
prime meridrian
The official unit for temperature in the SI - the currently used version of the metric system - is the Kelvin. In popular usage, the degree Celsius, a.k.a. degree Centigrade, is more common; the Kelvin is used a lot in science.
The Prime Meridian
Absolute zero.
It is called absolute location.
Also 38. Centigrade is another name for Celsius.
I'm having a little with trouble converting Centigrade to Fahrenheit. Centigrade is an older name for Celsius.
Kelvin is an SI unit and not a degree of temperature. Celsius is a degree of Kelvin. Kelvin's scale begins at absolute 0. Celsius is scaled equally to Kelvin (1 degree celsius= 1 Kelvin) but begins at 273 K which is when water freezes (0 degrees Celsius).
Centigrade was the old name for the Celsius system. It is exactly the same thing under a new name.
The Fahrenheit equivalent to zero degrees Centigrade is 32. Centigrade is another name for Celsius, and zero Celsius is the same as zero centigrade.
centigrade