"Maghreb" or "Sunset Time" is the time which Muslims finish their fasts with eating and drinking. The food and drink used for this time is named Eftari.
This time - Maghreb - is also the time for praying. So some religious men and women use to pray before eating or drinking...
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Added note:
See this photo in BBC:
www.bbc.co.uk/persian/interactivity/yourphotos/story/2005...
Photo prise le 21 octobre 2005 (© Hamed Saber / Flickr)