said that on the occasion of their third visit to the Cova da Iria, on 13 July 1917, she asked the Lady to tell them who she was, and to perform a miracle so that everyone would believe. The Lady told her that they should continue to come to the Cova each month until October, when the requested miracle would occur. De Marchi accounts Descriptions of the events reported at Fátima were collected by Father John De Marchi, an Italian Catholic priest and researcher. De Marchi spent seven years in Fátima, from 1943 to 1950, conducting research and interviewing the principals at length. In The Immaculate Heart (1952), De Marchi reported that, "[t]heir ranks (those present on 13 October) included believers and non-believers, pious old ladies and scoffing young men. Hundreds, from these mixed categories, have given formal testimony. Reports do vary; impressions are in minor details confused, but none to our knowledge has directly denied the visible prodigy of the sun." De Marchi authored several books on the subject, such as The True Story of Fátima. They include a number of witness descriptions: "The sun, at one moment surrounded with scarlet flame, at another aureoled in yellow and deep purple, seemed to be in an exceedingly swift and whirling movement, at times appearing to be loosened from the sky and to be approaching the earth, strongly radiating heat." — Domingos Pinto Coelho, writing for the Catholic newspaper Ordem. "The silver sun, enveloped in the same gauzy grey light, was seen to whirl and turn in the circle of broken clouds[.. The light turned a beautiful blue, as if it had come through the stained-glass windows of a cathedral, and spread itself over the people who knelt with outstretched hands[...] people wept and prayed with uncovered heads, in the presence of a miracle they had awaited. The seconds seemed like hours, so vivid were they." — Reporter for the Lisbon newspaper . "The sun's disc did not remain immobile. This was not the sparkling of a heavenly body, for it spun round on itself in a mad whirl when suddenly a clamor was heard from all the people. The sun, whirling, seemed to loosen itself from the firmament and advance threateningly upon the earth as if to crush us with its huge fiery weight. The sensation during those moments was terrible." — De Marchi attributes this description to Almeida Garrett,