There are two unsolved mysteries from the famous Fatima incident, almost a century ago.

First: The Miracle of the Sun, which occurred just after midday on Sunday 13 October 1917, witnessed by a large crowd gathered near Fátima, Portugal. Estimates of the number of people present range from between 30,000 to 40,000 (by Avelino de Almeida, writing for the Portuguese newspaper O Século), to 100,000 (estimated by Dr. Joseph Garrett, professor of natural sciences at the University of Coimbra), both of whom were present on that day, along with several newspaper reporters who took testimony from those who saw the extraordinary solar activity. The event was visible by onlookers up to 18 kilometres away, precluding the theory of a collective hallucination or mass hysteria, and Pope Pius XII himself witnessed the Miracle of the Sun from the Vatican gardens. Of the very many vivid accounts recorded by the noted Father John De Marchi, here are a couple of examples:
“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.” (By a reporter for the Lisbon newspaper O Dia);
“As if like a bolt from the blue, the clouds were wrenched apart, and the Sun at its zenith appeared in all its splendour. It began to revolve vertiginously on its axis, like the most magnificent firewheel that could be imagined, taking on all the colours of the rainbow and sending forth multicoloured flashes of light, producing the most astounding effect. This sublime and incomparable spectacle, which was repeated three distinct times, lasted for about ten minutes.” (By priest Dr Manuel Formigão).

Second mystery: The Third Secret given by Mary to the children at Fatima has not been revealed to the public, in defiance of her instructions that it was to be made known in 1960. Pope John 23rd read it that year and locked it away. In 1984, Cardinal Ratzinger (later to become the Pope who resigned) claimed to have read it, and said it concurred with Apocalyptic scripture. When he visited the Fatima shrine in 2010, he said, “We would be mistaken to think that the prophetic mission of Fatima is complete.” Pope Francis plans to visit the shrine on its centennial next year.
In a New Dawn article this month titled Converging Prophecy[1] , Warren Aston reminds us of the predictions of St Malachy (12th Century) telling us the Francis will be the last Pope. He compares this to a Jewish Rabbi of the same period, Judah Ben Samuel, who made predictions in fifty-year ‘Jubilee’ periods, from 1517 to 2017, with 2017 signifying the beginning of the Messianic end time. Aston points out that it is a leap of faith for any writer to predict that something will happen on a specific date. I think it is an even braver person who would claim that humanity can just expect the status quo to continue in the coming decade, ‘the same, only more so.’ There is a strong sense that something has to give, be it nuclear or biological war, economic collapse, viral outbreaks, natural disaster, pole shift, terrorism, ET contact, transhumanism or failed scientific experimentation or… Messianic intervention. Only if NONE of these things happens, will we continue just as we are.

Should we expect another supernatural Solar event in 2017?  Many believe so.
 
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Credit Source for Picture at Top of Page
Top Left: http://bishopjosephmarie.org/devotion/fatima%20page/story%20of%20fatima/looking%20at%20sun.jpg
Top Right: https://i.ytimg.com/vi/kxok8ZoPgFM/hqdefault.jpg
Article reference: 
[1] New Dawn Magazine issue no. 156 May-June 2016, p.25 Converging Prophecy, Warren Aston