It is held annually during the period of Mawlid (commemorating the birth of Muhammad).
Ahmed al-Mansour was impressed by a convoy of candles in celebration of Mawlid during his exile (between 1557 à 1576) in Istanbul.
He decided to imitate this Ottoman celebration in Marrakech.
He ordered candle convoys in all parts of the kingdom including Salé.
[2] Moroccans parade carrying large, colorful candles, which they then place at the foot of the mausoleum Sidi Abdellah ben Hassoun.