The Earth cools off at night more quickly  when the weather is clear than when it is cloudy. Why?
478405
Clouds act as an insulator to trap in the heat. When there are no clouds, the heat can leave the earth more quickly.
538503
Because the air is less dense the higher the altitude, there are less molecules available to retain heat. Therefore the heat of the sun dissipates more readily.
563639
huh?\n\nSome of the InSolAtion is trapped by the clouds. Esp. at night co heat up the Earth's surface.  \n\nAlbedo: Clouds absorbing the light
632325
When it is dark, your brain and body think it is night time. If it gets all datk and rainy in the day, your body doesn't understand because it associates dark with sleep. Also, I think the sound of thunder and rain hitting the windows is really relaxing. And there is the thing about the sun. Some people have that Seasonal Affective Disorder thingymejig which makes them depressed in the winter because sunshine makes you happy.
749637
Because the sky is kinda blue that time....\n\nAlso, because of the gloominess that flows all around in the night time....
495263
Because the air closer to the earth isn't always at the correct temperature and humidity level to create clouds.
125603
This depends on a couple of things -- how high the satellite is and the time of night. Remember, satellites are visible only because of light reflected from the Sun. If it's early in the evening where you are, the Sun isn't too far below the horizon, therefore any satellites passing overhead will readily catch sunlight because they're farther up in the sky. Very late at night, the number of satellites you're going to see will decrease because now the Sun is far below your horizon, and any satellites passing overhead must be quite high too still catch sunlight.
318033
day and night are caused by the fact that sunlight can only light half of earth at a time, and since earth is spinning, we are carried along and pass in and out of the sunlight.  earth has an atmosphere so we can see scattered sunlight even when we can't see the sun.  this is called twilight.
913566
the clouds from the sky helps regulate the temperatures.
329708
Your last question"Why atmosphere is more cozy in cloudy day comparatively other clear days?"\n\nBecause your grammar is so bad no one new what you were asking.
852339
Well, obviously the sun doesn't stop outputting light just because we're cloudy.  We're still getting 1120 W/m^2 through the atmosphere.  It's just being reflected, scattered, or absorbed by clouds, moisture, etc.\n\nSince clouds appear white from space, that says that a big chunk of the sunlight that would otherwise have it the ground winds up sailing off into space.
187752
Near the north pole, where the Earth's atmosphere is thinnest, charged particles from the Sun impact the protective layer of the Earth's atmosphere and create light shows at night.
1165348
Because you are in the neighborhood of ocean. In the day when it starts warming up, the water in the sea evaporates and then the clouds come with wind. So it rains in the afternoon or the evening when there are enough raindrops in the clouds
1001155
Thunderstorms clouds appear dark because the light from the sun is not making it through the clouds and to our eyes. The millions of tiny water droplets in the cloud help scatter, reflect, and absorb the sun's light as it travels down to earth. From space these clouds look very bright because they are reflecting and scattering lots of light, but from the ground it will appear very very dark.
395677
At Greenland. Because it is at the poles where the daily rotation os the earth is less effective. the day and night comes from the revolution of the earth.
205307
Daylight and sunlight are 2 different things. Daylight is obviously sunrise to sunset no matter how dark the sky may be because of clouds, rain, etc. It actually averages a bit more than 12 hours at all locations because of the width of the solar disc and refraction - sunlight bending thru the atmosphere. This adds about 15 minutes to the day at the equator where the sun to a large exent goes straight across the sky. The additional amount can be much greater around the poles though where when the sun is up it sort of circles the sky - more time near the horizon, thus more time the sun is visible (on a flat horizon) despite its actual geometric position being a bit below the horizon). Hope that is clear.\n\nYou probably mean amount of sunlight in a dry climate. That is rather site-specfic - hard to state a general amount.
700445
It heats up the atmosphere in the day time and at night when there is no sun, heat rises from the ground creating disturbances in the atmoshpere, aka wind. The same applies to cold air sinking from the upper layers of the atmosphere to the ground.