On the Sighting of the Crescent Moon

Posted on April 27, 2020
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 “astronomical new moon”. 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.

April 5, 2020April 22, 2020

Sighting Of The New Moon Of Ramadhan For 1441 Hijrah

The Brunei Darussalam Syariah Courts have announced that by the consent of His Majesty Sultan Haji Hassanal Bolkiah Mu’izzaddin Waddaulah ibni Al-Marhum Sultan Haji Omar ‘Ali Saifuddien Sa’adul Khairi Waddien, Sultan and Yang Di-Pertuan of Brunei Darussalam, Yang Berhormat Yang Di-Pertua of the Islamic Religious Council announced that the 1st of Syaaban 1441 Hijrah fell on Thursday, the 26th of March 2020. Therefore, Nisfu Syaaban for the year 1441 Hijrah falls on Wednesday, 8th of April 2020.

January 12, 2020July 9, 2020

Here is the challenge – What’s the youngest moon you can see this year 2020?

Here is the challenge – What’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.

August 31, 2019September 3, 2019

Muharram 1441H New Moon Observation

Bandar Seri Begawan – The Western sky was clear on the evening of August 31, 2019. The celestial objects, Venus and Sun, were used for scopes alignment during the new moon sighting.

The new moon observation of Muharram 1441H was held at Agok Hill by members of Astronomical Society of Brunei Darussalam. The 24 hour-old hilal (crescent moon) was sighted immediately after sunset, 6.28 pm (after pointing the scopes at sunset and slewing to the Moon).

PABD wishes all Muslims in Brunei Darussalam and around the world Salam Maal Hijrah 1441H.

July 30, 2019July 30, 2019

Determining of Hari Raya Aidiladha

Brunei Darussalam will determine Hari Raya Aidiladha with a moon sighting of month of Zulhijjah 1440 Hijrah nationwide on 29 Zulkaedah 1440 corresponding to 1st August 2019 at several designated areas in the three districts.

In the Brunei Muara District, the moon sighting will take place at the DST Tower of DST Headquarters building, Tungku Highway, Bukit Agok Jerudong, Tanjung Batu and Kampung Sabun. Meanwhile in the Belait District, Bukit Lumut and Bukit Ambog di Tutong District. The outcome of the moon sighting will be broadcast through Radio Television Brunei as soon as the result is received.

Source: RTB News

New Moon Data on 01 August 2019 at Sunset for Brunei Darussalam (PABD)

June 4, 2019June 5, 2019

Syawal Moon Sighting 1440H in Brunei: Crescent moon not sighted, Aidilfitri to be celebrated on Thursday

Bandar Seri Begawan – Members of the Astronomical Society of Brunei Darussalam were at Tanjung Batu for the Hilal of Syawal 1440H observation this afternoon. The new moon was not seen from various vantage points in Brunei due to very thick clouds.Present at the observing site was Yang Dipertua Hj Mahadi bin Hj Md Tahir, the president of the association.

May 22, 2019May 22, 2019

Lunar Crescent Marathon

Here’s our cosmic idea for school holiday activities – Lunar Crescent Marathon!

Go out to look for the daily changing moon crescent in early morning, before sunrise, on May 27 until Jun 02 2019 for the Waning and Old Crescent in the Eastern sky. Continue your observation on evening of June 04 until June 10 2019, shortly after sunset, for the New and Waxing Crescent in the Western sky.

May 5, 2019May 5, 2019

PABD holds Practical Moon Sighting

Bandar Seri Begawan – Members of the Astronomical Society of Brunei Darussalam were at Bukit Agok, Tutong, for a practical session to look for the new crescent moon (hilal ~11 hour old) this evening of Sunday, May 5th in anticipation of the beginning of the holy month of Ramadan.

Members had the opportunities to learn setting up telescopes properly, scopes alignment to the sun or other bright objects, photographing and tracking the new moon. The western sky was pretty clear at sunset, and a sunspot was also visible on the sun.

August 17, 2017June 16, 2018

New techniques for moon sighting explained

By Abdul Hakiim Yakof

Borneo Bulletin – TWO working papers on the use of modern technology for the sighting of crescent moon (Hilal) were presented during the Falak Syar’ie parallel session at The Rizqun International Hotel, Gadong yesterday.

The parallel session was part of the 14th Southeast Asia Survey Congress (SEASC) 2017 organised by the Ministry of Development’s Survey Department, in collaboration with the Brunei Institution of Geomatics (BIG), under the auspices of the Asean Federation of Land and Geomatics Survey (AFLAG). Continue reading “New techniques for moon sighting explained”

Tag: new moon