2020 Dec 13 Crescent Moon alongside Morning Star

Bandar Seri Begawan – There’s a beautiful cosmic pairing – the waning crescent moon and dazzling planet Venus – in the early-morning sky on Sunday, December 13, 2020. Enjoy these photos from members of the Astronomical Society of Brunei Darussalam.

Brilliant Venus, on upper right, and the slender lunar crescent shine side by side with just 1.5 degree of separation this morning, December 13, 2020. Photographed by Hazarry Hj Ali Ahmad if the Astronomical Society of Brunei Darussalam from Tutong, Brunei Darussalam.
A spectacular sight on display for early risers. Old Moon crescent and the Morning Star (Venus) hanged about 10 degree above the horizon from Bandar Seri Begawan at sunrise. (Photographed by Siti Nor Izuana Ayob of the Astronomical Society of Brunei Darussalam)

On the Sighting of the Crescent Moon

Posted on
by Rodion Herrera, Astronomical Solutions Company L.L.C

The sighting of the new moon is a particular subject in astronomy that has fascinated many observers since prehistory. Evidence of early human civilizations using the moon as a basis to measure time in the form of an actual lunar calendar has been discovered in the ancient plains of Scotland, dating back to 8,000 B.C. Professor Samuel L. Macey of the International Society for the Study of Time in his book, Encyclopedia of Time, says that using the moon to measure the passage of seasons was evident as far back as 28,000-30,000 thousand years. Therefore, the method by which we measure the beginning and the end of the new moon phase is indeed a crucial part of determining the accuracy of any lunar calendar.

2-day old crescent moon, photographed by the author in March of 2020, Muscat, Oman

Since the Islamic months follow a lunar calendar, the start of each month is marked by the first sighting of the crescent moon. It is important to note however, that the Islamic new moon is actually different to the โ€œastronomical new moonโ€. We define the astronomical new moon as that point when it is in conjunction with the sun, and thus it is actually too close to the sun and is very dark, for most of the lunar disc is in shadow. This point marks the beginning of measurement for the true age of the moon.

Continue reading “On the Sighting of the Crescent Moon”

Here is the challenge – Whatโ€™s the youngest moon you can see this year 2020?

Here is the challenge – Whatโ€™s the youngest moon you can see this year? The infographic will tell you when to hunt the new moon crescent (hilal), and where to locate its position in the western sky at sunset from Brunei Darussalam in 2020.

Note: Prediction method by Mohammad SH. Odeh (New Criterion For Lunar Crescent Visibility, 2005) employed new criterion visibility of the lunar crescent, V. This is only a computational analysis data. The result/declaration of the sighting/beginning of hijrah month should be referenced to official media by the Government.

Continue reading “Here is the challenge – Whatโ€™s the youngest moon you can see this year 2020?”

19-Hour Old New Moon Crescent of Rabiulakhir 1441H Sighted

Bandar Seri Begawan – The new 19-hour old crescent moon of Rabiulakhir was sighted today, on Wednesday evening (November 27th) by moon-sighters of Brunei Darussalam Astronomical Society at 6.31 pm, when the curved light was less than 2 degrees above the horizon.

The western sky was cloudy near the horizon at sunset, scopes were aligned using the 3 planet – Venus, Saturn and Jupiter – and unable to align using the Sun as it was most of the time behind the clouds.

Photo of a little crescent (hilal), which is an illuminated portion on the margin of the moon, behind clouds.
Continue reading “19-Hour Old New Moon Crescent of Rabiulakhir 1441H Sighted”