If you want to go back to 2016, you probably don't know that there is a very simple way you can use. But it's worth noting that following this path may not give you exactly the result you expect.
The Gregorian calendar, which is the calendar used by most of the world today, was not always the standard calendar. You can read the story of the adoption of this calendar and the story of countries losing between 10 and 13 days in the process in our news.
Although most countries in the world now use the Gregorian calendar a 13-month calendar is used in Ethiopia one of the few countries that use other ways of dividing the year into measurable periods. These months are called Meskerem, Tikimt, Hidar, Tahsas, Tir, Yakatit, Maggabit, Myazya, Ginbot, Sene, Hamle, Nehasa and Pagume.
Instead of a mixed lunar system of 30 days, 31 days and months of 28 or 29 days depending on the year, the ethiopian calendar has 12 months of 30 days each, followed by a final month of five or six days, depending on whether it is a leap year or not.
However, to further confuse visitors to the country, the time of day does not follow the same system and the days are divided into two 12-hour halves starting at 6:00 am instead of midnight. Although travelling to Ethiopia will not really transport you back in time it is quite interesting that the country is currently experiencing the year 2016, and the answer that Ethiopia is experiencing the year 2016 dates back to 500 AD
Like the Gregorian calendar, the Ethiopian calendar is based on the birth of Jesus. while the Catholic Church changed its calculations of the time of Jesus' birth in 500 AD, the Ethiopian church did not, and in addition to all the differences, this places the Ethiopian new year on 11 September according to the Gregorian calendar.
Ethiopia, the only country in Africa that has never been colonised, is still living in 2016 because it continues to use old calculations.