For New Rules for the Four Seasons of the Year in the Countries of The Tropical Zone

The main proposal of this text is the recognition of the new seasons of the year for tropical countries. In the textbooks of tropical countries we teaches and learns the seasons as if they were temperate zone countries. As this content was created in the temperate zone, or more precisely in Europe, the processes of colonization of the tropical countries practiced by European countries, only means that this content is repeated even if it is not correct and even if it does not make any practical sense there. Besides the scientific misunderstanding, it is necessary to correct through education the periods and calendars of the four seasons of the countries of the tropical zone. The cultural issues of each locality should be taken into account without the simplification that there is no winter in the tropics or there is summer throughout the all year long. The region is large enough to house different proposals for locations with different climatic characteristics. We should not only use international conventions as if all regions of the planet had identical characteristics. Obviously, just as in the tropical zone things are different from the temperate zone, certainly in the polar zones things as different that two first. With the current speed and flow of information does not justify using an international convention that does not portray the reality of our country.


Introduction
The seasons occur across the planet because of the inclination of its longitudinal imaginary axis.
The translation of the earth shows the four different astronomical positions, which help to define the four seasons, lasting ~90 days each. The four seasons are set also by weather patterns and the incidence of the sun throughout the year in the tropical zone, it makes the differences become more subtle, and damaging its conceptualization in this region.
Their differences are more bounded outside the tropics, in the temperate zone, in the dominant countries, which have created these rules and imposed through literature for northern colonized countries such as ours. The dominant countries in the world are United States of America, Japan and Countries from European Continent.
Brazil it´s a country colonized for Portuguese people and others countries from South and Central America (tropical America) was colonized for Spanish people. Spain and Portugal are countries from European continent. Besides being an almost totally tropical country, Brazil is the only country in the world in whose territory are Equator and one of the Tropics, The Tropic of Capricorn. This differentiated condition in relation to the countries of the temperate zone in itself justifies the adoption of it's own rules for four seasons, but we only learn and teach the four seasons like countries from temperate zone, even it's no make sense here.

Materials and Methods
The sun towards on Salvador ~27/10 (Bahia, Brazil), for example, far before the official summer (almost 60 days), therefore, the city receives its rays back the pin, ~15/02, which would date the fall in the official rules. The summer of Salvador should be considered on 27/10, date of the first solar zenith until April 2nd, 45 days after the second, because the heat comes before summer officially and lasts much longer, with high temperatures since before Spring official until after the official fall, which would justify the modification.

Solar Zenith in Salvador
Source: veraodabahia.blogspot.com (Own) 1 A metal plate contains a central gnomon done with a screw length of 120 mm. It also has four screws at their ends to allow a perfect leveling, which is measured by the level, which also equips the board, and other equipment needed as a global positioning device -GPS, compass and a clock with thermometer and calendar.
The image shows the GPS geographical coordinates of Salvador, the calendar shows that the image was made on 14/02/2010, so a date zenith in Salvador and the clock shows that were 11:33 am, just before the occurrence of perfect zenith what can be perceived by the shadow cast westbound. Compasses placed on the board make the same is perfectly aimed at the geographic North, given the discount of the local magnetic declination, informed by a constant adhesive plate.
The differentiated system of direct sunlight, twice a year between the tropics, highlighting the need for different standards for four seasons of the year in these localities are, however, it is taught the same rules of the temperate zone.
Different society need different types of education as long as it is taught by the master minds of education. Knowledge acquisition will make by the subject's interaction with the environment, and knowledge is built with the approximation of reality by men, therefore, would be more correct to teach rules that are consistent with the observed reality in different localities, especially with the possibility of flowing information, update observation, and the presence of new technologies available for education.
There is another concept in temperate zone totally incorrect in tropical zone. In the summer, the day are more longer than night, and in the winter, the night are more longer than day. In fact, this phenomenon is bigger in polos of the earth and have well observation in temperate zone, but in our latitude, ~13.0 degrees south (Salvador, Bahia, Brazil), we can observer the variations of velocity of the sun but not the variation duration of the day and night because changes summer to winter. There some days that the sunset and sunrise happen early and other that it happens latest.

Results and Discussions
For this reason, the summer in Salvador should be considered since the first solar zenith (~27/10) until 45 days after the second zenith (~15/02). From 25/07 to 03/11 the sunset become more fast, and sunset happen each day early. 27/10 it's a date next to 03/11, the fastest day of the sun in tropical zone. We observer high temperatures this date. For the same reason (see sun's analemma and calendar), 12/02 it's the slowest day by solar day. Sunset late. If sun stay more time, we can considered summer after solar zenith more 45 days at least. It's a careful criteria because a official season is 90 days long. Obviously other locations from tropical zone can considerer it own seasons based in solar zenith and climatic parameters. Certainly we need to create a new tropical zone in two parts in each hemisphere. From point of latitude 11º 43' 11" until the tropic (the mid distance between equator and tropic, north or south) we have bigger summer, at least zenith to zenith more 45 days, as decribed. It's necessary remember that in south the difference between points of the analemma are bigger than in north. Probably from point of latitude 11º 43' 11" until the equator (the mid distance between equator and tropic, north or south) there aren't winter.
We should to listen to the consideration of the scientists living in those localities before to confirm such scientific dictates. Just as it is a mistake to try to impose the seasons of the temperate zone there, it would also be wrong to try to impose a rule on a latitude based on the parameters of another. In addition, it is necessary to remember that the summer of the southern hemisphere occurs near the perihelion, which makes it more intense than that of the northern hemisphere, which occurs near aphelion. Obviously this makes, by analogy, that the winter of the northern hemisphere is stricter than that of the southern hemisphere. On these differences it is

Conclusions and Recommendations
It is perfectly possible that the Seasons of the Year can not be measured with such precision of dates in all locations of the same latitude because there are certainly different climatic factors at different locations. It is perfectly possible also that there are differences between what should be the durations of summer and winter if we compare the localities of the north and the south because of the differences of distance of the planet with respect to the sun when it is summer or winter in the north or the south, as described.
What is unacceptable is that, having this knowledge about the planet and its movements it is necessary to repeat only the four Seasons of The Year as described in the temperate zone as if it were correct for the entire planet. In tropical locality things are different and the dates set by the four astronomical positions of the planet are not always in line with the realities of many places in tropical countries.
For Salvador the summer should be started on October 27, its zenith solar date, and do not wait until December 21 when the sun is in the tropic of capricorn. Summer should last until April 02, 45 days after the second solar zenith (which occurs on February 12), then we will divide the rest of the year (~ seven months) into the other three seasons, fall, winter and spring, which would be shorter than in temperate zone countries.
As the four names of the seasons are very traditionally known and rooted in culture and education, we must continue to use them. The other tropical locations should decide the durations of their seasons based on solar zenith and their climatic factors.