According to astronomical calculations, Friday will be the first day of Eid Al-Fitr.

Eng. Majed Abu Zahra, president of the Astronomical Society in Jeddah, said that there will be the occurrence of the phenomenon of conjugation before sunset on the evening of Thursday, Ramadan 29, corresponding to April 20.

The sun and moon meet in the sky when they are on one celestial longitude and the moon is moving from the west of the sun to its east, which is a global event that takes place simultaneously around the world.

In an interview with Al-Arabiya.net, Abu Zahra said that the sun will set in Makkah at 06:42 p.m. Thursday evening, and the moon will be 4 degrees above the horizon at that time, with an elongation of 05 degrees between the moon and the sun, and 0.2 percent illumination.

The moon will set at 7:06 p.m. after 24 minutes of sunset, and thus the conditions for entering the month of Shawwal will be fulfilled astronomically.

The Shawwal crescent, however, cannot be seen with the naked eye or monitoring devices because of its scant illumination, its presence in the glow of the setting sun, and its short duration above the horizon.

On Friday, April 21, the sun will set from the horizon of Makkah at 06:43 p.m., and the moon will be 16 degrees above the horizon with an elongation of 17 degrees, and its illumination is 2.4%.

It will be very easy to see with the naked eye if the sky is clear, and it will set at 08:05 in the evening, one hour and 22 minutes after sunset.