Ramadan 2021 will come to an end this week, marked by the celebration of Eid al-Fitr.
Across the globe, more than a billion and a half Muslims have been observing Ramadan - the holiest month in the Islamic calendar, and the period of time people fast between dawn and sunset.
The fasting period puts focus on prayer, purification, and charitable acts, and its practice reminds Muslims of the suffering of the poor.
Eid, which means 'festival' or 'feast', marks the end of Ramadan.
To celebrate, people who have observed Ramadan break their fast with a unique, traditional feast, spend time with family and friends, and pray.
Due to the coronavirus pandemic and lockdown, celebrations in the UK will be much smaller than usual.
The exact time that Eid al-Fritr begins is determined by the sighting of the crescent moon, so it can't be predicted precisely in advance.
The sighting of the moon marks the start of the month following Ramadan - Shawwal, the 10th month of the Islamic calendar.
It is traditionally announced by local religious authorities - and therefore Eid can begin at different times in different countries.
However, some countries choose to go by when the crescent moon has been sighted in places like Saudi Arabia or Morocco.
In Saudi Arabia, the Supreme Court has urged citizens to look for the moon on the evening of Tuesday, May 11.
In the UK, it will begin on the evening of Wednesday, May 12 and end on Thursday, May 13.
