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Posidonius calculated the Earth's circumference by reference to the position of the star Canopus.As explained by Cleomedes, Posidonius observed Canopus on but never above the horizon at Rhodes, while at Alexandria he saw it ascend as far as 7 + 1 ⁄ 2 degrees above the horizon (the meridian arc between the latitude of the two locales is actually 5 degrees 14 minutes).
After short-term fluctuations (tens of thousands of years) are averaged out, the long-term trend can be approximated by the following polynomials for negative and positive time from the present in "/a, where T is in billions of Julian years (Ga): [39] p − = 50.475838 − 26.368583 T + 21.890862 T 2 p + = 50.475838 − 27.000654 T + 15.603265 T 2
Long after the death of the Solar System, ... a day on Earth will be one hour longer than it is today. ... or ≈1 inch in 25,000 years). ...
If you work 40 hours per week — or an 8-hour day, five days a week — and earn $65,000 annually, you’re working a total of 2,080 hours during a 52-week calendar year.
The company has continued to add streaming services on its platform, with the latest being Crunchyroll, a global anime brand that offers access to 25,000 hours of anime with more than 2,000 titles.
In the 48 hours since this easy donation service launched on Instacart, over 25,000 items have been donated from people across the country looking to help. ... and it is unclear how long it will ...
Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars . Earth's rotation is slowing slightly with time; thus, a day was shorter in the past. This is due to the tidal effects the Moon has on Earth's rotation.
Here, the working time per worker was around 2,456 hours per year, which is just under 47 hours per week. In Germany, on the other hand, it was just under 1,354 hours per year (26 per week and 3.7 per day), which was the lowest of all the countries studied. [1]