First day of Summer 2007!
Finally, the first day of Summer 2007, arrives at 2.06pm, 26oC!
In the northern half of the world, June 21st is the first full day of summer. June 21st is not only the first day of summer, it is also the longest day of the year north of the equator (in the sense that the length of time elapsed between sunrise and sunset on this day is a maximum for the year); and this is called the summer solstice. The word solstice means “Sun stands still.” On this longest day of the year, the sun is farthest north.
While In the southern hemisphere, winter and summer solstices are exchanged.
Most of us will know, in the summer, days are longer, and night is shorter while in winter, the days are shorter and the nights longer; but do you know there is a time when the day and night are each 12 hours long? Does the terms "Vernal Equinox" and "Autumnal Equinox" rings a bell?
Vernal equinox is when the day and night are each 12 hours long. When will that be? That will be in between winter and summer, the first day of spring north of the equator, and the first day of autumn in the southern half of the world.
Just like Vernal equinox, day and night are the same length in Autumnal equinox; happening in between summer and winter, on the first day of autumn north of the equator, and the start of spring to the south.
So there you go, I learnt something new today, hope you did too ;)
Cheerios and keep smiling!
With Love from PoohBear
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