New Moon Sighting for Syawal 1439H Explained

Bandar Seri Begawan – There is another chance to break the national record for the youngest moon crescent on June 14, 2018 during the upcoming moon crescent observation for Syawal 1439H.

See explanation below:

Infographic of Syawal 1439H New Moon Sighting
Infographic of Syawal 1439H New Moon Sighting

Reminder: This is only a computational analysis data. The result/declaration of the sighting will be announced through official media by the government.

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”

2017 May 26 An Ultra-thin 15-hour old Ramadan 1438H Crescent is sighted

The crescent was sighted at 18:59 local Brunei Time on May 26, 2017 from Agok Hill

Bandar Seri Begawan – The official first day of Ramadan falls tomorrow (27th May 2017) in Brunei Darussalam as the moon crescent of Ramadan was sighted by the officials (of the new moon sighting committee) in this country.

The members of Brunei Darussalam Astronomical Society organized the crescent sighting at Bukit Agok in Tutong. It was attended by 30 members including the public.

Continue reading “2017 May 26 An Ultra-thin 15-hour old Ramadan 1438H Crescent is sighted”

New Criterion for Lunar Crescent Visibility

By MOHAMMAD SH. ODEH, Arab Union for Astronomy and Space Sciences (AUASS), P.O. Box 141568, Amman 11814, Jordan (e-mail: modeh@auass.org)  (Received 12 May 2005; accepted 19 September 2005)

Abstract. A new criterion for lunar crescent visibility has been established using 737 observations, almost half of them obtained by the Islamic Crescent Observation Project (ICOP). This criterion is based on two variables, viz. the topocentric arc of vision and the topocentric crescent width. The new model is able to predict the visibility of the lunar crescent both for naked eye and optically aided observations. From the database we found a Danjon limit of 6.4 degrees.

Introduction The lunar crescent visibility has been studied by many astronomers since the Babylonian era, with as a result currently more than 12 different criteria for lunar crescent visibility, based on a number of sightings in different lunar conditions. Many of these criteria were developed by Islamic astronomers, since a number of Islamic religiouseventsaredirectlyrelatedtolunarcrescentsighting.Forexample,thenew Lunar (Hijric) month begins on the next day of sighting the new crescent at west after sunset.

Download HERE New Criterion Crescent.pdf