Lunar crescent visibility of Rabia al-thani 1442 Hijri

Lunar crescent visibility of   Rabia al-thani 1443  Hijri

The Conjonction :

The geocentric conjunction between the Moon and the sun will be at the end of the lunar month on Thursday, Novemver 04; 2021  at  22:15 local time.

Moon’s position after sunset on Thursday, November 04 , 2020.

In Tunisia: The Moon set before sunset.

In Islamic cities: The Moon set before sunset..

Possibility of Moon crescent visibility.

The visibility of Shawwal crescent, will be possible after the sunset on Friday , Novemver 05, 2021 in the world, from 10:51 local time. The crescent will be visible  as shown on the map below (Fig. 1).

 

 
Figure 2: Lunar crescent visibility areas of Shawwal (according to Istanbul criteria) after sunset on Friday , November 05, 2021.

Figure 1: Lunar crescent visibility areas of Shawwal (according to Istanbul criteria) after sunset on Friday , November 05, 2021.

Abbreviation: 

lag: La période entre le coucher du soleil et le coucher de la lune. (si la valeur est négative dans ce cas la lune se couche avant le soleil).

Age Lune: The period between the conjunction and the sunset.

HL: Moon topocentric elevation (if the moon sets before the sun, the value will compensated by the symbol "*** ***").

DAZ: The difference between the sun’s azimuth and the moon’s azimuth, at sunset.

ARCL: Geocentric elongation between the sun and the moon.

W: The illuminated percentage of the moon's surface.

Indication : The criteria used to predict the visibility of the lunar crescent, are the Istanbul criteria (1978-2016).

The crescent Moon is visible after sunset, if the following conditions (criteria) are true.

  • The geocentric conjunction occurs before sunset.
  • HL> 5 ° at sunset.
  • ARCL> 8 °, at sunset.