Navigators began using the astrolabe for navigation in the early 15th century. It was a key tool for determining latitude by measuring the angle between the horizon and the stars.
The compass rose was invented in the early 1300s by Italian navigators to assist with navigation at sea. The exact year of its invention is not known, but it became widely used by the mid-14th century.
The earth is approximately 4.5 billion years old.Counting the years did not start until civilisation existed. It also depends on which calender you are using. (there are many)
To make the year start more or less in the same season every year, an extra day is added every four years.
In the year 3168 was the start of the Galaxy War on the planets of Ravvage, Earth, and the Moon.
Dont know the exact date or year, but it was the start of the new stone age!
What year did the vikings start
The astrolabe was invented sometime in the first or second century BC.
1908
*
1960
1500s
1975 model year.
1939
middle ages
1986
2001
1995