Astronomer Adel Al-Saadoun said, “Thursday, the 13th of next May, is the first day of the month of Shawwal and the happy Eid Al-Fitr.”
Today, Saturday, Al-Saadoun added that the main indicators for calculating visibility are the conjunction of the moon with the sun, as the moon and the sun are coupled with what is called the conjunction of the two luminaries on Tuesday, on 29 Ramadan 1442, corresponding to May 11, 2021, at 10 pm, so the moon sets 15 minutes before the sun. And it is impossible to see it as it was absent and did not become associated with the sun.
He explained that on Wednesday 30 Ramadan, corresponding to May 12, the conditions for seeing the crescent will be appropriate as follows: “The sun sets at 6 and 32 minutes in the evening, and the moon sets at 7 and 12 minutes in the evening, the age of the moon at the time of sunset, which is the time that has elapsed since the conjunction 20 hours and 33 minutes and the length of the moon’s stay Above the horizon after sunset is 39 minutes, and the height of the moon above the horizon at sunset is 7 and a half degrees, and the elongation, which is the angle between the moon and the earth, is 9 degrees and 18 minutes, and these conditions are suitable for seeing the crescent.
Regarding the rest of the circumstances, he stated that the width of the moon will be 12 seconds, and it is very thin and the intensity of the lighting is 0.66 percent, which is not sufficient to see it with the naked eye except with optical close-ups, and according to these indicators, the crescent is seen in Kuwait by optical close-up (Derbel) on the evening of Wednesday 12 May.
He indicated that he would see with the naked eye in western Saudi Arabia and the rest of the Arab Maghreb countries, so Thursday, May 13th, is the first day of the month of Shawwal and the Happy Eid.