Post by Admin on Sept 10, 2015 9:12:49 GMT 8
There are two occasions in every year wherein the length of day and night is approximately equal all over the world. This occasion is called “equinox”, derived from the combination of Latin words “aequus” and “nox” which mean, “equal night”.
The two equinoxes are the Fall (Autumnal) Equinox that occurs on September 22-23, and the Spring (Vernal) Equinox on March 20-21. At the equinox, the tilt of the Earth's axis is perpendicular to the Sun's rays; hence, the Sun shines directly over the Earth’s equator at noon.
Astronomically speaking, the September equinox marks the beginning of the Fall (Autumn) season in the Northern Hemisphere, and this also signifies the transition to Winter Season. From this day until the Spring Equinox in March, the sun rises late in the morning and sets earlier in the afternoon, making the days shorter and the nights longer in the Northern Hemisphere as the Sun crosses the Earth’s equator towards the Southern Hemisphere.
In the Philippines, this year’s Fall Equinox comes on September 23, Wednesday at 4:22 in the afternoon. Weeks after the fall equinox, the Philippines and other tropical regions will witness a gradual transition from Southwest Monsoon season or Habagat season, to the Northeast Monsoon season or Amihan Season.
The two equinoxes are the Fall (Autumnal) Equinox that occurs on September 22-23, and the Spring (Vernal) Equinox on March 20-21. At the equinox, the tilt of the Earth's axis is perpendicular to the Sun's rays; hence, the Sun shines directly over the Earth’s equator at noon.
Astronomically speaking, the September equinox marks the beginning of the Fall (Autumn) season in the Northern Hemisphere, and this also signifies the transition to Winter Season. From this day until the Spring Equinox in March, the sun rises late in the morning and sets earlier in the afternoon, making the days shorter and the nights longer in the Northern Hemisphere as the Sun crosses the Earth’s equator towards the Southern Hemisphere.
In the Philippines, this year’s Fall Equinox comes on September 23, Wednesday at 4:22 in the afternoon. Weeks after the fall equinox, the Philippines and other tropical regions will witness a gradual transition from Southwest Monsoon season or Habagat season, to the Northeast Monsoon season or Amihan Season.
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