Royal Observatory Greenwich blog
Start and end dates of Ramadan 2011
Date (2011) Times of first sighting and setting of the crescent Moon*
London Manchester Leeds Glasgow
31 July Crescent moon not visible Crescent moon not visible Crescent moon not visible Crescent moon not visible
1 Aug Crescent moon visible under perfect conditions around 20:58; sets 21:09 Crescent moon visible under perfect conditions around 21:12; sets 21:19 Crescent moon visible under perfect conditions around 21:10; sets 21:16 Crescent moon easily visible around 21:27; sets 21:29
30 Aug Crescent moon not visible with a telescope  Crescent moon not visible Crescent moon not visible Crescent moon not visible
31 Aug Crescent moon easily visible around 20:03 
sets 20:18
Crescent moon easily visible around 20:11; sets 20:23 Crescent moon easily visible around 20:09; sets 20:19 Crescent moon easily visible around 20:19; sets 20:25

*Times are BST not GMT, and may not correspond exactly with the official (religious) sighting of the crescent moon.

Watercolour painting of the crescent Moon
The dates of Ramadan and other Islamic months depend on the sighting of the new crescent Moon.

Information on the visibility of the Moon from anywhere in the world is available from HM Nautical Almanac Office’s Websurf facilty:

Also of interest

  1. Great information! I’ve been looking for something like this for a while now. Thanks!

    Comment by medical assistant 26 July 2010 @ 12:01 am

  2. What are the dates for 2011???

    Comment by Jo 30 July 2011 @ 11:38 pm

  3. Where is this years Start and end dates of Ramadan 2011 – I use this every year to determine the start and end of Ramadhan.
    Please could you update the website ASAP.

    Comment by Mubbushar Mirza 1 August 2011 @ 9:50 am

  4. Thanks, I use it every year so please continue to upload this info.
    Next year it would be around 19th or 20th of July for the purposes of updating.

    Comment by Rasheed Hadi 8 August 2011 @ 1:21 pm

  5. From the information for start and end dates of Ramadhan 2011 it is very clear that Ramadhan in London should have started on 2nd August and Eid (end of Ramadhan) would be on 1st September. Why is it that majority of Muslims (and not just this year) started Ramadhan on 31st August and will celebrate Eid probably on 31st August.

    Comment by Rafik Ahmad 18 August 2011 @ 2:27 pm

  6. Please let me know the visibility of crescent moon in August
    I look froward to hear from you
    regards
    Abdul Naeem Janjua

    Comment by Abdul Naeem Janjua 29 August 2011 @ 4:07 pm

  7. thanks very much for moon information showing on the moon

    Comment by khalid 31 August 2011 @ 1:18 pm

  8. Hi i came across this Ramadan 2012 website which announce Eid Dates and Times along with when the moon was sighted.
    Would their information on their website be correct? Seem’s like a lot of people follow the times on their site.
    thank you

    Comment by Ramadan 2012 3 November 2011 @ 1:29 pm

  9. Hi
    Is it possible to find out moon sighting information for August, Sep and Nov 2012. It makes it easier to plan my holidays at the start of the year. Many thanks.

    Comment by KAT 6 January 2012 @ 5:44 pm

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