Historical happenings

3/13/607 ~ The 12th recorded passage of Halley’s Comet occurs.

3/13/1918 ~ Women are scheduled to march in the St. Patrick’s Day Parade in New York due to a shortage of men.

3/13/1974 ~ Arab nations decide to end the oil embargo on the United States.



The Equinox, a period when some people sally forth to hug trees, commiserate with bunnies or merely note the lengthening of the daylight period, is upon us.

The length of day and night during equinox

During the day, the sunlight directly hits the ground without any obstacle. This releases a lot of heat on the earth’s surface. The sun spends almost equal time both above and below the horizon in every place on the earth thereby making the night and the day to have the same length. But in a real sense, the day is longer than the night during the equinox. This because of the below two reasons:

First, the sun appears from the earth as a disc, not as appoint of light, thus the upper age of the sun appears as its center is below the horizon. The sunrise then occurs when the upper part of the disc appears from the eastern horizon.

Second, there is sunlight reflection by the earth’s atmosphere. This results to an observer seeing the day-light before the sun completely rises from the horizons.

During sunset in the evening, the sun’s semi-diameter is a 16minutes arc while the atmospheric refraction is 34 minutes arc. This means that when the upper part of the sun is seen slightly above the horizon, the center of the sun is 50 minutes of the arc just below the horizon. This phenomenon makes the day be 14 minutes longer than the night at the equator and the poles. The observer’s latitudinal and longitudinal variation makes the time of sunset and sunrise to vary. There is a greater change of the length of the day and night during the equinox. A transition of 24hours of nighttime to 24 hours of daytime happens at the poles during the equinox.

During equinox, the sun rises at 0600hours and sets at 1800hours but this time is not constant due to the below reasons:

  • The sun’s diameter is greater than the earth’s diameter therefore 60% of the earth can be exposed to the sunlight at any time.
  • The time zones of the earth differ with minutes or even hours depending on the part of the earth one is at. The example in reference to the time zone meridian 15 degrees east, then the sun will rise at around 0700 hours and set at around1900 hours on the equinox that is around 12 hours.
  • The speed of the earth around the sun affects the length of the day. This is known as the equation of time. As a result, even the places located around the meridian will not see the sunrise and sunset at 0600 hours and 1800hours.
  • Twilight in the evening is part of the night. In case dawn and dusk can be regarded as daytime then the day can have 13 hours at the equator, or even more at the higher latitudes.

In conclusion, the month of march and September the temperature change and variation of the day and night are felt at some places these variations are highly felt these are the places near the equator that the latitude 0 degrees.

Now you can tell your boss why you are late Monday morning.

Historical happenings

3/7/1927 ~ A Texas law that bans Negroes from voting is ruled unconstitutional by the Supreme Court.

3/7/1933 ~ The film King Kong premieres in New York City.

3/7/1979 ~ Voyager 1 reaches Jupiter.


We had the first full Moon for March on the second night. Another will occur on the 31st night giving us another blue moon.

This phase occurs at 00:51 UTC. This full moon was known by early Native American tribes as the Full Worm Moon because this was the time of year when the ground would begin to soften and the earthworms would reappear. This moon has also been known as the Full Crow Moon, the Full Crust Moon, the Full Sap Moon, and the Lenten Moon.

As the date gets closer, we shall alert you to the Equinox in case anyone has a sudden urge to hug a tree, bunny or strip and leap into an icy brook. Seasonal Change Disorder afflicts Gaia’s myrmidons in odd ways.


Here’s a preview of what’s coming in March. We’ll look at parts of this at different times during the month.


There were some clouds as moonset approached. In fact, at the beginning of the eclipse the moon was opaqued by what turned out to be ice vapor and some dense fog over the foothills. Those dissipated and the show went on as promised.
This image was made at the intersection of South Carolina Rte 11 and I-26 about 07:22. The foothills you see are in North Carolina, the border which is about six miles away.

I used a Nikon D-80 with a 70 ~300mm lens at 300mm and set the ISO at 800. The image was worked from Camera RAW, sharpened and some contrast added. Otherwise no other work was done except to crop and scale to fit this format.


Don’t forget the Lunar eclipse is tomorrow morning at 13:31 UTC. We are minus time from that depending upon in which time zone you reside. Moon set on the East Coast is 07:28 as is sunrise. The eclipse will be starting prior to that and in totality before moonset.