What is the stellar day?

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Sidereal time is a time-­keep­ing system as­tronomers use to keep track of the di­rec­tion to point their tele­scopes to view a given star in the night sky. It is a time scale that is based on the Earth's rate of rotation measured relative to the fixed stars rather than the Sun.

Answers distribution

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answers
flagRussia
82%
13%
4%
0%
23
flagFinland
81%
12%
0%
6%
16
flagthe United Arab Emirates
79%
12%
4%
0%
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flagFrance
78%
7%
10%
0%
28
flagSwitzerland
76%
5%
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17%
17
flagUkraine
73%
23%
3%
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26
flagNorway
71%
21%
7%
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14
flagthe United Kingdom
67%
18%
7%
6%
242
flagthe Philippines
66%
20%
4%
8%
24
flagPoland
65%
18%
9%
5%
6812
flagGermany
64%
16%
8%
10%
111
flagthe Netherlands
64%
9%
6%
19%
31
flagRepublic of Ireland
64%
14%
7%
14%
14
flagSweden
61%
16%
16%
5%
18
flagUnknown
59%
22%
10%
6%
585
flagIndia
56%
28%
9%
4%
167
flagthe United States
55%
25%
9%
7%
207
flagAustralia
53%
28%
7%
7%
28
flagItaly
55%
44%
0%
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18
flagCanada
50%
6%
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25%
16

Gender

men65%
women61%
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65%
61%
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20%
19%
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9%
11%
26 h 05 min 11 s
5%
8%

Details

Author: Krzysztof Moskal
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