march
There is a Tornado valley! and there is such thing as Tornado Alley!
They're the same length on either side of the date of the equinox, which falls in March and September. In 2009 those dates were 3/20 and 9/22, respectively. Just count days on either side of those dates, to answer our question. What ends up happening, is that the first 20 days of March will have roughly the same length of daylight as the 20 days AFTER the September equinox (i.e. 9/22 thru 10/11). Similarly, the first twenty days of September will have the quality of daylight shown for the first 20 days after the spring equinox (3/20 thru 4/9)
In 2012, the day when spring and fall had roughly equal hours of daylight and darkness was the equinox on September 22nd. On this day, the lengths of day and night are approximately equal all around the world.
In January, there are typically more hours of darkness than daylight in the Northern Hemisphere due to the winter season. Conversely, in the Southern Hemisphere, there are more hours of daylight than darkness during January as it is summer in that part of the world.
daaylight savinz time
There is a Tornado valley! and there is such thing as Tornado Alley!
I'm guessing march?
They're the same length on either side of the date of the equinox, which falls in March and September. In 2009 those dates were 3/20 and 9/22, respectively. Just count days on either side of those dates, to answer our question. What ends up happening, is that the first 20 days of March will have roughly the same length of daylight as the 20 days AFTER the September equinox (i.e. 9/22 thru 10/11). Similarly, the first twenty days of September will have the quality of daylight shown for the first 20 days after the spring equinox (3/20 thru 4/9)
As it is the month of an equinox, there is a fairly equal amount of darkness and light, so about 12 hours of daylight.
March 20 and September 23 are the two equinox days when there are 12 hours of daylight and 12 hours of darkness at any place on the Earth.
March equinox and September equinox : Daylight and darkness are of equal length on both the Vernal Point (Spring/March 20th 2011) and the Autumnal Point (Autumn/September 23rd 2011) .
In 2012, the day when spring and fall had roughly equal hours of daylight and darkness was the equinox on September 22nd. On this day, the lengths of day and night are approximately equal all around the world.
21 April and 21 September.
In January, there are typically more hours of darkness than daylight in the Northern Hemisphere due to the winter season. Conversely, in the Southern Hemisphere, there are more hours of daylight than darkness during January as it is summer in that part of the world.
12 hours of daylight. 12 hours of darkness.
That is called the equinox.
daaylight savinz time