Which month has the shortest days?

Answer 1

If you mean which month has the days with least number of daylight hours, it depends on which hemisphere you are in. In the northern hemisphere, the shortest day would be Dec 21. In the southern hemisphere, it would be June21 or 22.

Answer 2

December has the shortest days of sunlight in the Northern Hemisphere.
June has the shortest days of sunlight in the Southern Hemisphere.
February has the fewest days, even in a Leap Year, but I don't think that that's what you mean.
This March, or whenever you go on Daylight Saving Time, has the shortest single day of the year when your clock gains an hour, but the day loses an hour in length .

Answer 3

According to what I recently read in the Guinness Book of World Records, The last complete day is always the longest on record. Because the Earth spins a little slower with each rotation. The gain is something like a tenth of a second in a century. In light of this, the month with the shortest days is January.

Answer 4

The cause of the seasons is that the rotation axis of the Earth is not perpendicular to its orbital plane, but makes an angle of about 23.44°, the obliquity of the ecliptic, and that this axis keeps its orientation in inertial space. By consequence, for half a year (from around 20 March to around 22 September) the northern hemisphere tips toward the Sun, with the maximum around 21 June, while for the other half year the southern hemisphere has this honour, with the maximum around 21 December. The two instances that the Sun is overhead on the equator are the equinoxes. Also at that moment both the north pole and south pole of the Earth are just on the terminator, and therefore day and night are equally divided over the whole globe.

The table above gives the instances of equinoxes and solstices over several years. A few remarks can be made.

The actual equinox is a single moment in time — it does not take the whole day. But the crossing of the Sun over the equator is slow enough that the equinox day will have 12 hours of daylight and 12 hours of nighttime, and within an accuracy of a few minutes, the day before and after too.
It is 94 days from the June solstice to the September equinox, but only 89 days from the December solstice to the March equinox. The seasons are not of equal length because of the variable speed the Earth has in its orbit around the Sun.
The instances of the equinoxes are not fixed but fall about six hours later every year, amounting to one full day in four years, but then they are reset by the occurrence of a leap year. The Gregorian calendar is designed to follow the seasons as accurately as possible. It is good, but not perfect. Also see: Gregorian calendar#calendar seasonal error.
Smaller irregularities in the times are caused by perturbations of the Moon and the other planets.
Currently the most common equinox and solstice dates are 20 March, 21 June, 22 September and 21 December, the four year average slowly shifting to earlier times in the years to come. This shift is a full day in about 70 years (largely to be compensated by the century leap year rules of the Gregorian calendar). But that also means that as many years ago the dates of 21 March, 22 June, 23 September and 22 December were much more common, as older books teach and older people still remember.

Answer 5

The shortest amount of sunlight is in December at the winter solstice.

Answer 6

All days are 24 hours long... it doens't matter what month it is.
However, if you mean number of days... February has 28 days... except in a Leap Year.. when February has 29 days.