In the United States, the year is 2020 AD, but, in what other countries is the year different? Why?

An Ethiopian year is comprised of 13 months, and is seven years behind the Gregorian calendar. Ethiopians celebrated the new millennium on September 11, 2007.

Explanation:

Why they are so late is because they have 13 months in a year.

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d