How can one tell the time of day by looking at the sun?
538345
Determine if it is past noon depending on the relative time you've been awake, then by the position of the sun deterim the diresction, and wothout the aid of a sun dial you can make an estimate to the time.
914543
at different times on the earth the sun is at different positions in the sky. When it's noon somewhere, it's midnight on the direct opposite side of the earth. If a particular time was called 12 noon to everyone it would seem silly to the people where it was midnight.
950528
Using the chronometer as a starting point, you figure out when noon is supposed to be.  \n\nYou use the Sextant to measure the Declination (it has heavy, heavy dark glass for this) and monitor the sun until it hits the highest point.   It actually appears to 'hover' there for a few seconds. Then you compare it to the chronometer.  The distance it is off of from Greenwich time gives you the longitude.
715905
Western Australia is a bit over 8 hours ahead of Devon in "Sun time" so if they are watching the sun low in the western sky at 6PM, it's still only 10AM in Devon, so you can clearly see the Sun as well.\n\nEven Australia's East coast is only 11 hours ahead, so their 6PM sun is our 7AM, so provided it's a time of year when the Sun is actually up by 7AM, we can both look at the same sun.\n\nSimilar conditions apply to the Moon, though the timing is a bit more complicated as the moon rises and falls progressively later each day.
1117573
Hai shishi.. Assume that u r in pluto,whether it's day or night the temperature always remains freezing! Likewise when night comes obviously our earth rotates and turn the other side the previous 12 hours jouney.\n          Then the gradual rotation makes us again face sun.Thus if u set up a thermometer at the outside areas u will notify the increase in temperature along with the rotation of clocks.\nremember..'THE EARTH IS SPHERICAL!'
425853
You can learn that something is moving.  Either the earth is rotating (true), or the sky is revolving around the earth (once thought to be true).  You can also measure the length of the siderial day.  That is the length of time it take for the earth to rotate reletive to the stars.  Our "day" of 24 hours is based on the sun's motion.  If we were to measure time based on the stars we would have a day of 23hours and 56 minutes.  You can measure the length of the day with star trails, although to really get the timing down might be hard.
347581
it depends on where in the world you are.\n\ngo to www.timeanddate.com and find your location (or one that is close to you).  it will show you the time and day.
533246
http://www.worldtimezones.com/
956732
you are right,lenght of day depends on : date (position of the earth on it's orbit); location on earth (latitude, elevation);  to calculate day/night lenght, longitude is needed only to find mean time of sunrise/set,noon...in calculs, time should be converted to UTM, dates to Julianian dates.\ni don't know formula to calculate length of day/night,but here's some usefull sites:\nhttp://www.gcstudio.com/suncalc.html\nhttp://susdesign.com/sunangle/\nhttp://aa.usno.navy.mil/faq/docs/equinoxes.html
679235
Mine says; stationary, sun rise 6:29 sun set 7:35
801936
- The sun rises in the east and sets in the west.\n\n- If there is broken cloud in the morning we may look to the west and see red light reflecting back from the cloud, i.e. 'red sky in the morning'. As the clouds are coming towards us there must be a chance of rain, at least an increased chance compared with the cloudless period we had just enjoyed.\n\n- Likewise for 'red sky at night'. If we see red clouds in the evening they will be in the east and have already passed us by, giving a good chance of clear skies and fine weather ahead.
1153059
Actually, the time difference between yourself and your companion 'sunrise-watcher' varies depending on latitude. Up by the Arctic circle, you could be seeing the sun set only a few hundred miles from someone watching it rise. Go to time.gov, they show a graphic representation of the earth showing the terminator between day and night. You'll see what I mean.
676514
The sun DOES rotate! It also revolves.
253237
If you want the time and date, it's 8:26 AM EDT June 21st and 7:22 PM EST December 21st this year. (Sky & Telescope magazine Almanac 2006)\n\nIf you want to see what they are, put a globe on your table and stand where the North Pole is leaning toward you.  If you (the Sun) look at the globe from the level of the Earth's center, you'll see that the Sun is at its northernmost latitude - The Tropic of Cancer.  That's the summer solstice.  Six months later - on the side where the South Pole points toward you, the Sun is overhead at its most southern latitude - The Tropic of Capricorn.  That's the winter solstice.\n\nIt seems odd, but because of the ellipticity of its orbit the Earth is actually closer to the sun in the Northern winter than it is in the summer - by about 3-4 million miles.  As you can see from the exercise above, though, from the Northern Hemisphere viewpoint the sunlight is very slanted in the winter and more directly overhead in the summer.
260237
here you have the answer\nhttp://webexhibits.org/daylightsaving/c.html
462732
The United States Naval Observatory has a calculator that will give the sunrise and sunset times for any entered date based on either a list of cities in the United States or using latitude and longitude for locations not listed.
991288
A good site is Heavens Above (see link below).  Just register (it's free) and use the database to find tell it where you live by selecting your country then typing in the name of your city (no state, province, county...).  It will give you a list of town by that name to select from.  From there you can get sky maps and lots of other information.\n\nFor example, they also list the times that satellites and other orbiting bodies such as the International Space Station or the Hubble Telescope will pass by in the sky.  Since these objects are in space, they are in full sunlight even when the earth below is in the dark, so you can see a bright spot of light moving across the sky when this happens.  (The light is of course the sunlight reflecting off the satellite.)\n\nHave fun!