Ron Torell, former University of Nevada Extension livestock specialist now retired, wrote a few years back that most cows pay for themselves by age six. âThus, the longer a cow stays in the herd, the more profitable she becomes.
Naturally, these hours, minutes, and seconds are shorter than the solar hours, minutes, and seconds you are familiar with. One solar day is 24 solar hours long, and one sidereal day is 24 sidereal hours long, but one sidereal day is 23 solar hours and 56 solar minutes long. This exercise was based on a help section of CyberSky. A shareware version of CyberSky is available from http://www.cybersky.com .
What you have come to understand as a âdayâ is classified by astronomers as a solar day. Itâs the amount of time it takes for the Sun to move through the sky and return to roughly the same spot. This is different from the amount of time it takes for the Earth to turn once on its axis â the 23 hours, 56 minutes. Also known as a sidereal day.