As the Islamic month of Ramadan comes to an end Muslim communities across the world are preparing to celebrate Eid al-Fitr. But, as with many Muslim holidays, its exact date isn't fixed. Eid is celebrated after either 29 or 30 days and comes to an end the day after the first night the new moon is visible.
There are some other complications. Some countries including India and Bangladesh start Ramadan a day later than the UK so start looking for the moon a day later. You can read more about the way the date of Eid is set here.
But another difficulty comes from the fact there isn't an official system for deciding what counts as a moon sighting for Muslims in the UK. Some mosques and communities will look for the moon in British skies on Thursday, April 20, but others will follow reports from other countries including Saudi Arabia.
