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Learning about seasons around the hemisphere

Seasons change and they bring much change around the world. Perhaps, the leaves are turning color or the birds don’t sing or chirp as much as they used to. Another sign that fall is approaching might be less sunlight. All of this indicates the summer season is gradually transitioning to the fall or autumn season.

As C. S. Lewis greatly interprets the fall season as:

“But I remember more dearly autumn afternoons in bottoms that lay intensely silent under old great trees”

Did you know that this change in season is due to the Earth’s rotation around the sun? As a matter of fact, the Earth is divided into the Northern Hemisphere and the Southern Hemisphere, just to represent what happens to the sun exposure on earth.

Since the Earth rotates around the sun on an axis, the exposure to the sun varies giving the different seasons. In the months of May, June, and July, the Earth is exposed the most to the sun, providing the summer season in the northern hemisphere. While in the southern hemisphere, it is winter with less sun exposure in that part of the world.

Fall brings beautiful colors in leaves.

However, in the months of December, January, and February, the Earth is exposed the least to the sun, allowing the winter season to occur in the northern hemisphere. In turn, the southern hemisphere has the summer season. Seasons are categorized as:

  • spring = primavera (vernal),
  • summer = verano (estival),
  • autumn or fall = otoño (autumnal), and
  • winter = invierno (hibernal).

Of course, in a yearly calendar, there are four important dates (besides holidays) that tells when the seasons change. In the 2012 calendar, these dates are or were March 20th, June 20th, Sept. 22nd, and Dec. 21st, each represents the equinox and solstice points in a calendar year. The year 2012 is special since it is considered as a leap year.

The longest summer day occurred on June 20th and the longest winter day will occur on December 21st, when night and day are equally 12 hours apart. Equinox is derived from the Latin ‘equal night’ and solstice ‘to stand still sun’. Fall or autumn season will begin on September 22nd. In the calendar year, you might experience spring/summer between March and June and fall/winter between September and December.

Since seasons change, climate changes too, which affects how different species survive. In the winter months, birds migrate to warmer climates and bears hibernate until spring.

Isn’t amazing how nature works for all living creatures on Earth? How are you getting ready for fall or autumn?