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In terms of Earth's rotation, the average day length is about 360.9856°. A day lasts for more than 360° of rotation because of the Earth's revolution around the Sun. With a full year being slightly more than 360 days, the Earth's daily orbit around the Sun is slightly less than 1°, so the day is slightly less than 361° of rotation.
The ancient Athenian calendar was a lunisolar calendar with 354-day years, consisting of twelve months of alternating length of 29 or 30 days. To keep the calendar in line with the solar year of 365.242189 days, an extra, intercalary month was added in the years: 3, 6, 8, 11, 14, 17, 19 of the 19-years Metonic cycle.
Marathon. The marathon (from Greek Μαραθώνιος) is a long-distance foot race with a distance of 42.195 km (26 mi 385 yd), [ 1] usually run as a road race, but the distance can be covered on trail routes. The marathon can be completed by running or with a run/walk strategy.
on this day in history, feb. 7, 1964, beatles arrive in us for first time, inspire nationwide mania The film received two Oscars during the 37th Academy Awards (1965), which honored movies from 1964.
On this day in history, August 10, 1776, Declaration of Independence reaches London. Kerry Byrne. August 9, 2024 at 9:02 PM.
A Day In History: October 12th On this day in 1492 , Italian explorer Christopher Columbus discovered the New World. The Italian explorer first found a Bahamian island, thinking he had reached ...
The length of the day ( LOD ), which has increased over the long term of Earth's history due to tidal effects, is also subject to fluctuations on a shorter scale of time. Exact measurements of time by atomic clocks and satellite laser ranging have revealed that the LOD is subject to a number of different changes.
It is the smallest planet in the Solar System, with an equatorial radius of 2,439.7 kilometres (1,516.0 mi). [ 4] Mercury is also smaller —albeit more massive—than the largest natural satellites in the Solar System, Ganymede and Titan. Mercury consists of approximately 70% metallic and 30% silicate material.