Chairman of the Board of Directors of the Emirates Astronomical Society, and member of the Arab Union for Space and Astronomy, Ibrahim Al-Jarwan, stated that the period from the beginning of June until the end of August is considered the hottest throughout the Arabian Peninsula, noting that the appearance of the “Pleiades stars” begins at dawn on June 7, It is considered the “first heat” among the Arabs, as the daytime temperature exceeds 42 degrees Celsius.
In detail, Ibrahim Al-Jarwan said that the Arabs care about the date of the rise of the “Pleiades” at dawn, as it is a sign of the onset of heat and intense heat, and the stars of the Pleiades are seen starting at dawn on June 7 above the eastern horizon, and the Arabs say: “The heat is from the rise of the Pleiades to the rise of Suhail.” ».
Al-Jarwan stated that it can be seen when it rises in the northeastern side, and it tilts from the east by about 25 degrees towards the north in the Emirates, and this side in “Deira” or the old navigational compass is called the rising of the Thuraya.
He pointed out that the people of Al-Anwa count the days of “the Pleiades rising” or “the rising of the Pleiades during dawn” as 13 days, extending from June 7th to June 19th, while the “Pleiades Season” includes the rising of the Pleiades and its satellite, Aldebaran, and extends between June 7th and the second. From July.
In the middle of the “Pleiades Season,” the meridian shadow diminishes and disappears at the Tropic of Cancer, where the sun’s rays perpendicular to it and the sun reaches its furthest inclination to the north, with the summer solstice on June 21, and the day reaches its maximum length, and the night its shortest, in the northern half of the Earth.
He mentioned that the Arabs consider “the rising of the Pleiades” to be “the beginning of the heat,” and that heat for the Arabs is a time of extreme heat, when temperatures are at their maximum, and “poisonous” winds are active, where daytime temperatures exceed 42 degrees Celsius, and do not fall below 25 degrees Celsius at night. It is accompanied by northwesterly summer winds, which the Arabs called “Al-Bawarih” or the “Al-Bareh” winds. The “Sumum” winds, which are dry and hot summer winds, are also active, and dust whirlwinds form.
The period from the beginning of June to the end of August is considered the hottest throughout the Arabian Peninsula, as with the rising of the Pleiades stars at dawn on the seventh of June, the “Pleiades season” begins and continues until the second of July, when the winds are active and the heat intensifies, and it is the first of the hot seasons, followed by “the period from the beginning of June to the end of August.” Season of Gemini and Marzam. During the third of July to the 10th of August, the heat reaches its maximum, the drought is severe, and toxins are activated, and finally the “Suhail season” from August 11 to the fifth of September, in which the humidity intensifies with the intensity of the heat, and the “cos” becomes active, and with the rise of the Suhail, the heat dissipates.
The heat waves are interspersed with heat waves in which the temperature rises by no less than four degrees Celsius above the normal rate. The Arabs called them “Waghrat.”
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