Posts Tagged ‘moonwatch’

When is Eid al-Fitr? 1433 / 2012

August 15, 2012

Bismillah.  *Sunday 19th August 2012 is a sensible date for Eid al-Fitr 1433 for the whole world.*

Please refer to the Moonwatch data (, that shows:

Friday 17/8: Conjunction and astronomical new moon around 15.54 UT (GMT) – no crescent moon is visible anywhere on earth that night, except possibly in the Southern Pacific, very close to the solar date-line.

Saturday 18/8: The crescent moon is visible throughout the Southern Hemisphere, plus a few places north of the Equator, but not in Asia, the Middle East, North Africa or Europe.

Sunday 19/8: The crescent moon is easily visible throughout the whole world, including the UK.


Sunday 19th August 2012 is a sensible date for Eid al-Fitr 1433 for the whole world: there is expected to be a high degree of agreement on this, as has happened in previous years.  (Those who began Ramadan on Fri/Sat 20/21 July will complete 30/29 days of fasting and celebrate Eid together.)

For those following local sightings, Monday 20th August 2012 would be Eid al-Fitr 1433 in the UK.

May Allah bless us all during the remainder of Ramadan and on the glorious day of Eid al-Fitr (the Festival of Breaking the Fast).

Dr. Usama Hasan,

Senior Researcher in Islamic Studies at Quilliam & Fellow of the Royal Astronomical Society

15th August 2012 / 26th Ramadan 1433

About the Ramadan start date this year 1433/2012

August 15, 2012

Bismillah.  This is what happened:

Saudi claimed to have seen the moon on Thursday 19/7 and began Ramadan on Friday 20/7; many other countries followed suit.  However, we know definitely that such a sighting was impossible, for at least two reasons:

(i) from precise astronomical calculations ( )

(ii) had it been genuine, there would have been an easier sighting from the Southern US and Central America on the same date, which there wasn’t.  Refer to Ibn Taymiyyah’s fatwa on moonsighting (elsewhere on this blog), as well as Sheikh Afif al-Akiti’s detailed treatise on the subject.

However, the ECFR ( ) had already announced that Ramadan would begin on Friday 20/7, due to the expected visibility of the crescent moon from South America on 19/7.  The ECFR mentioned Santiago (Chile) in its declaration.  Note that the ECFR’s declaration implied that they agreed that moonsighting was impossible in Saudi on that date, but ruled that the Chile sighting was enough for the whole world, even if it occurred many hours after local sunset elsewhere: e.g. the ECFR method required Australia to begin Ramadan on 20/7, even though they are about 12 hours ahead of Chile. 

Note also that this ECFR method is consistent, and is a possible approach to determining Arabian/Islamic lunar dates worldwide, using the solar date-line as an effective lunar date-line.  If people agree to use this method, it is a possible solution to the moonsighting problem, although we will need to check that it gives a reasonable pattern of 29/30-day months.

Amongst Sunni Muslims, there were three start dates:

(i) Friday 20/7 – those following the impossible Saudi sighting or the plausible ECFR method

(ii) Saturday 21/7 – those following the easier sightings around most of the world on the next day

(iii) Sunday 22/7 – for northern latitudes such as the UK, those following a local sighting.

Amongst Shia Muslims, the same three start dates were observed, based on people following the fatwa of their authority (marja’), whether Fadlallah, Khoei or Sistani respectively.

Reflections on Moonsighting

August 2, 2009

1) This is the latest version of a presentation I’ve given at various places around the UK: Reflections on Moonsighting

2) A first-night, 32-hour-old crescent-sighting (plus Venus) from my back garden in London, Muharram 1428 / January 2007 (and hence signalling the start of a new Islamic year) can be seen in this YouTube video.

3) Here is an introductory course on Islamic astronomy, covering Qiblah, prayer times and moonsighting: An Introduction to Islamic Astronomy

4) Here is a presentation on similar subjects by Dr. Steve Bell of HM Nautical Almanac Office, and who is perhaps the UK’s top expert on such astronomical calculations (he also does all the calculations for Websurf and Moonwatch): London_2007Sept08

5) “The Correct Qiblah” – a paper by Kamal Abdali: qibla paper