Archive for March 20, 2016

March or Spring or Vernal Equinox with Heat Wave in Malaysia   2 comments


Sunrise

The Sunrise while we were on the way for a photographic outing in Kedah and Perlis.

A heat wave in Malaysia.

It is currently very hot and dry in Penang, Malaysia. Temperatures are soaring upwards to above 40 degrees Celsius. It is simply too hot to take photographs during the day-time, so photography has to take a back seat for the current heat wave for senior citizen like me. About 14 persons had been stricken with heat stroke already. Schools have to close if the heat wave continues as warned by the government. The heat with the high humidity is just too hot for my personal experience for this current heat wave, as I was able to bear these heat waves in the past. We have to take our bath more often (3 or 4 times a day) and drink at least 3 litres of water daily.

SP Lim

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The spring equinox officially arrives that Sunday at 12:30 a.m. EDT. Astronomically, the equinox March 20 signals spring’s beginning in the Northern Hemisphere, while in the Southern Hemisphere it marks first day of fall. It occurs when the sun crosses the celestial equator on its apparent way north along the ecliptic. The word equinox stems from the Latin words meaning “equal” and “night.”

From International Business Times.

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From Wikipedia

EQUINOX
An equinox is an astronomical event in which the plane of Earth’s equator passes through the center of the Sun, which occurs twice each year, around 20 March and 23 September.

On an equinox, day and night are of approximately equal duration all over the planet. They are not exactly equal, however, due to the angular size of the sun and atmospheric refraction. To avoid this ambiguity, the word equilux is sometimes used to mean a day in which the durations of light and darkness are equal.

Etymology
The oldest meaning of the word “equinox” refers to a day when daytime and nighttime are of approximately equal duration.[4]

The word “equinox” comes from this definition and is derived from the Latin aequinoctium, aequus (equal) and nox (genitive noctis) (night).

Names

Spring equinox and fall (or autumn) equinox: colloquial names based on the seasons. However, these can be ambiguous since the northern hemisphere’s spring is the southern hemisphere’s autumn, and vice versa. The Latinate names vernal equinox (spring) and autumnal equinox (fall) are often used to the same effect.

March equinox and September equinox: names referring to the months of the year they occur, with no ambiguity as to which hemisphere is the context. They are still not universal, however, as not all cultures use a solar-based calendar where the equinoxes occur every year in the same month (as they do not in the Islamic calendar and Hebrew calendar, for example).

Northward equinox and southward equinox: names referring to the apparent direction of motion of the Sun. The northward equinox occurs in March when the sun crosses the equator from south to north, and the southward equinox occurs in September when the sun crosses the equator from north to south. These terms can be used unambiguously for other planets.

First Point of Aries and first point of Libra: names referring to the astrological signs the sun is entering. Due to the precession of the equinoxes, however, the constellations where the equinoxes are currently located are Pisces and Virgo, respectively.

Inserted by SP Lim

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