In a rare astronomical phenomenon, the world will witness a partial solar eclipse tomorrow, Saturday, March 29th, coinciding with the end of the month of Ramadan and the beginning of the month of Shawwal. According to the Egyptian Astronomy Research Institute, the eclipse will be visible in several regions around the world, including Europe, North Asia, parts of North and West Africa, a large part of North and South America, as well as the Atlantic Ocean and the North Pole. Regarding the details of the phenomenon, Dr. Mohamed Ghareeb Ahmed Rashid, a solar physics professor at the National Institute for Astronomical and Geophysical Research, explained that the partial eclipse will reach its peak when the moon covers about 94% of the sun's disk, and this astronomical phenomenon will last for approximately 3 hours and 53 minutes from start to finish. Rashid explained that a solar eclipse occurs when the sun, moon, and earth align in a straight line, with the moon passing between the earth and the sun, resulting in blocking a portion of the sun's light from reaching the earth. Although this phenomenon will occur in many regions, it will not be visible in Egypt. Regarding upcoming astronomical phenomena, Rashid confirmed that the next partial eclipse will occur on September 21st, pointing out that these phenomena can be useful in determining the beginning and end of the lunar months in the Islamic calendar, reflecting the clear movement of the moon around the earth and the earth around the sun.