Muslims can mark the exact Qibla direction on May 27 as the sun will shine at the head of Khaana Kaaba, reported Alarabiya English.

According to the website, the National Research Institute of Astronomy and Geophysics in Egypt has announced that the sun will align directly over the Kaaba at 2:18 PST today, during the noon prayer. 

The direction can be  located with the ancient method of observing the shadow of a stick while fixing it on the ground vertically. The shadow line will indicate Qibla direction. 

The institute’s department in charge of researching the Sun’s activities said in a statement on its official Twitter account that the elevation angle of the sun at the time of the Zuhr prayer will be 89.93 degrees above the Kaaba, that is only 0.07 degrees away from being 100% vertical at 90 degrees.

The phenomenon happens twice a year, the first will be on May 28 and the second on July 16.

When the event will occur, the cube-shaped structure, draped in black silk at the center of the world’s most sacred Muslim site, will cast no shadow.