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How long until loss of daylight darkens the northern hemisphere?
Wiki User
∙ 15y ago
The tilt of the Earth's axis relative to our orbit around the Sun causes the seasons. Here in the northern hemisphere, the amount of sunlight peaks on June 20 or 21, at the summer solstice, and the amount of sunlight decreases every day after that until December 20 or 21, the winter solstice. (The date varies with the cycle of the leap years.)
Today is December 19, and the Winter Solstice this year occurs on December 21, 2008 at 4:04 AM PST which is 12:04 UT (Universal Time). So Sunday the 21st will be the shortest day of the year, and starting on December 22, the amount of sunlight will increase by a minute or two per day until the Summer Solstice on June 21.
Wiki User
∙ 15y ago
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Are the days longer or shorter in the northern hemisphere right after the autumnal equinox?
The word 'Equinox' means equal day and night. The Autumnal equinox falls on the 23rd September. So any date after this, say 26th September, in the Northern Hemisphere the nights are longer than the days. Conversely, in the Southern Hemisphere the days are longer than the nights. At the Vernal (Spring) Equinox, 21st March, the whole system is reversed. There are four days in the year when there is a change. For the Northern Hemisphere; Vernal Equinox ; day and night are the same length. After this date the days are increasing and night is decreasing. until; Summer Solstice; Daylight is at a maximum and night is a minimum. Autumnal Equinox ; day and night are the same length. After this date that nights are longer than the days. Winter Solstice ; Daylight is at a minimum and night is a maximum. However, in the Southern Hemisphere , the whole system is reversed !!!! Vernal Equinox ; day and night are the same length. After this date the days are decreasing and night is imcreasing. until; Summer Solstice; Daylight is at a minimum and night is a maximum. Autumnal Equinox ; day and night are the same length. After this date that days are longer than the nights. Winter Solstice ; Daylight is at a maximum and night is a minimum. So in the USA or Great Britain(Northern Hemisphere), when its Summer, it is Winter in Australia & South Africa (Southern Hemisphere). Similarly at the poles. North Pole ; Summer ; 24 hours daylight and South Pole 24 hours darkness. North Pole ; Winter 24 hours darkness and South Pole 24 hours daylight. S
Does it get dark on January at 5?
That depends on the country & time zone you are in At the South Pole it will stay daylight for most of the day, but during November & December it is almost 24 hour sunlight If you're at the North Pole, there will be very little sunlight In the northern hemisphere it gets dark in early afternoon, while in the southern hemisphere it is summer, so it's light until well into the evening
During which month does the northern half of the earth get the least sunlight?
This is impossible to answer without a location. In general days are shortest in December and January in the Northern Hemisphere, and June and July in the southern. However, days are not always sunny. That depends on the weather patterns in specific places. You would need to look at weather records for the place in which you are interested.
How many hours of daylight for Dec 22 2011?
Well it depends on what day it is but today is November 20. so 10 days until December. . plus 31 is 41. Then 365 days until 2012 is 406. THEN add 365 again minus 10 . SO. . . 406 days plus 355 is 761. 761 days till December 21, 2010 . counting from November 20, 2010.
What is the chance of the sun will still be up in the evening?
The Sun will be in the sky until it dips below the horizon just after dusk. During Summer in the Northern Hemisphere, it can be after 10pm-ish.
What hemisphere is in the winter in March?
The northern hemisphere until March 19, after that, no hemisphere is in winter until June 21, and then the southern hemisphere is in winter.
When does the northern hemisphere have summer and the southern hemisphere have winter?
Nominally from June 21 until September 21 or 22, the northern hemisphere is in summer, whereas the southern hemisphere is in winter.
How long until Australia drifts into the northern hemisphere?
NoBody knows
What month was summer 1942?
In the northern hemisphere, summer is always June until September.
How is it spring in Antarctic in November?
The seasons differ by six months between the northern and southern hemispheres. The spring season is from about March 21st until June 21st in the northern hemisphere and from September 21st until December 21st in the southern hemisphere.
How many minutes a week does the daylight get longer?
It is not a linear process but a sinusoidal process. The daylight period increases most rapidly at the Spring equinox. The rate of increase slows to 0 at the Summer solstice, after which it starts decreasing. The rate of decrease reaches a maximum at the Autumn equinox after which it starts easing up. It reaches 0 at the Winter solstice after which it starts increasing until the Spring. Remember, though that Spring in the Northern hemisphere is offset by six months compared to the Southern hemisphere, and so on. Thus, when daylight hours are increasing in the Northern hemisphere, they are decreasing in the Southern hemisphere. The periodicity of this process is a year. The rate of maximum increase (or decrease) per week depends on the latitude. In the polar regions, the day length reaches 24 hours during the Summer and cannot increase further. Similarly, during the Winter, daylight length decreases to 0 and cannot decrease further.
Why does the length of daylight increase from March 1st to March 31?
The reason that the time between sunrise and sunset gradually increases from late December until late June in the northern hemisphere is that the portion of the northern hemisphere that is illuminated by the sun gradually increases during that time from a minimum of about 37% to a maximum of about 63% due to the relationship between the direction of the tilt of the Earth's rotational axis and the direction of the sun.
When do daylight hours start getting longer?
In the northern hemisphere, daylight hours start getting longer after the Winter Solstice, December 21. The daylight continues to legthen everydy until Summer Solstice, June 21. Then the reverse happens. The daylight gradually reduces until Winter Solstice arrives again.
Are the days longer or shorter in the northern hemisphere right after the autumnal equinox?
The word 'Equinox' means equal day and night. The Autumnal equinox falls on the 23rd September. So any date after this, say 26th September, in the Northern Hemisphere the nights are longer than the days. Conversely, in the Southern Hemisphere the days are longer than the nights. At the Vernal (Spring) Equinox, 21st March, the whole system is reversed. There are four days in the year when there is a change. For the Northern Hemisphere; Vernal Equinox ; day and night are the same length. After this date the days are increasing and night is decreasing. until; Summer Solstice; Daylight is at a maximum and night is a minimum. Autumnal Equinox ; day and night are the same length. After this date that nights are longer than the days. Winter Solstice ; Daylight is at a minimum and night is a maximum. However, in the Southern Hemisphere , the whole system is reversed !!!! Vernal Equinox ; day and night are the same length. After this date the days are decreasing and night is imcreasing. until; Summer Solstice; Daylight is at a minimum and night is a maximum. Autumnal Equinox ; day and night are the same length. After this date that days are longer than the nights. Winter Solstice ; Daylight is at a maximum and night is a minimum. So in the USA or Great Britain(Northern Hemisphere), when its Summer, it is Winter in Australia & South Africa (Southern Hemisphere). Similarly at the poles. North Pole ; Summer ; 24 hours daylight and South Pole 24 hours darkness. North Pole ; Winter 24 hours darkness and South Pole 24 hours daylight. S
Which hemisphere northern or southern receives more hours of sunlight on April 1?
From March 21 until about September 21, the Earth's northern hemisphere is tilted towardthe sun, and receives more sun light on any day than the southern hemisphere does.
When do the nights get longer and the days get shorter?
The winter solstice - around December 21 - the days then begin to get longer or "draw out" until The summer Solstice in June - for the Northern hemisphere - opposite in the Southern hemisphere
Does it get dark on January at 5?
That depends on the country & time zone you are in At the South Pole it will stay daylight for most of the day, but during November & December it is almost 24 hour sunlight If you're at the North Pole, there will be very little sunlight In the northern hemisphere it gets dark in early afternoon, while in the southern hemisphere it is summer, so it's light until well into the evening
