Don Bosco is recorded to have made numerous predictions (“all fulfilled”) of a private and public nature. Overall, not counting those occurring in dreams, close to 200 recorded instances of prediction were accurately made by Don Bosco. Here are some examples.

In 1850, at a meeting of a select group of the St. Aloysius Sodality, Don Bosco predicted the death of young Burzio, a saintly boy of the Sunday oratory.

In 1855, during the last session of the July retreat at St. Ignatius in Lanzo, while reciting the Rosary, Don Bosco seemed to enter a trance-like state. As he later explained, he had seen two flames spring from the altar, flashing the words, “death” and “apostasy.” They moved down the aisle and rested on two of the participants, a prediction fulfilled that same year.
In the Good Night of 31st Dec 1858, listened to by many, Don Bosco announced that one person would die at the Oratory before the beginning of Lent, and he placed his hand on Michael Magone’s head. Magone died on January 21. Another boy, Constantius Berardi, who had thought he would be the one, breathed a sigh of relief. But on January 25 Don Bosco announced that Magone was not the one that was meant. The 16-year old Berardi died on 5th February 1859.

In 1860, as chronicler Ruffmo writes (entry of April 7th), Don Bosco had repeatedly predicted that one of the boys would die; and 14-year old Alexander Trona, who had just entered the Oratory, died on April 24, 1860.  Ruffmo reports that Don Bosco explained how he some times gained precognition that someone would die: “I see boys walking on different paths which may be intersected by a ditch about one half, one third, or one fourth of the way. At other times I see a date written across the paths—year, month, and day”.

In 1862,  Don Bosco predicted that one of the boys would die before 3 moons had passed. Seriously ill 19-year old David Quarelli thought he would be the one. Don Bosco assured him that it would not be he. On Aug 15th , 14-year old John Petiti died.

In 1862, one evening atVignale, during an autumn camp outing, Don Bosco was with some boys among whom Joseph Buzzetti and Modesto Davico. All of a sudden he asked them to say a prayer for the boy who would die that night. At prayers he asked all the boys to pray for one who was gravely ill at the Oratory a long distance away. (There were telephones or emails at the time!) The next morning he asked the boys to pray for the boy who had died during the night. A letter from Fr. Alasonatti 3 days later brought the news that Rosario Pappalardo had died suddenly.

In 1862, during the monthly retreat for a Happy Death, Don Bosco had been trying without success to get 16-year old Albert, who had been led astray by another lad, to go to confession. He told him: “The time will come when you’ll ask for me and you won’t find me.” In the Good Night of December 1, Don Bosco urged the boys to make the retreat for a Happy Death well because one of them would die before he could make another.
Albert laughed it off. On the 31st Dec, while Don Bosco was away on a preaching tour, Albert became gravely ill. Then, sensing that death was near, he began to cry and to call for Don Bosco. But Don Bosco was too far away. Fortunately Albert was able to make his confession to Fr. Rua, received the Last Sacraments, and shortly thereafter he died.

In 1863, again during a monthly retreat for a Happy Death, Don Bosco exhorted the  students to make the retreat very well, announcing that for two of the boys, it would be their last. The 15-year old apprentice John Baptist Negro died on March 23; while 13-year old student Joseph Scaglietti died on April 3.

But Don Bosco did not only predict deaths. He also was instrumental in many healing miracles, and even was believe to have brought back to life people who had died, as in this example:

The incident took place in Florence and was attested to in the diocesan process for Don Bosco’s beatification and canonization.
Marchioness Uguccioni deeply loved her very young godson, who had suddenly fallen victim to a grave illness and was dying. Messengers were at once dispatched all over town to find Don Bosco who was then visiting a boarding school of the Somaschi Fathers. As the superiors were escorting him through the building, the marchioness herself arrived, all disheveled and plainly dressed, screaming that her godson was dead and begging Don Bosco to bring him back to life.
The priests were astonished at seeing her so upset, and they feared for her sanity as she kept begging Don Bosco to go with her. Don Bosco obliged. The young boy was lying on a bed, immobile, ashen, glassy-eyed, and seemingly dead. After inviting all the bystanders to pray to Mary, Help of Christians, Don Bosco gave his blessing to the lifeless little body. He had scarcely finished when the little boy began to breathe, yawned, and having regained consciousness, smiled at his mother. He fully recovered within a short time.
Deeply grateful, the marchioness became such a generous benefactress of Don Bosco that his Salesians began calling her “our good Mamma in Florence.” Whenever Don Bosco was in that city, she claimed the privilege to host him, and showed him her esteem and respect. Both she and her husband remained most grateful to him until their death, as can be seen in hundreds of letters from the marchioness.
Father Berto, who accompanied Don Bosco to Florence several times, declared: “In 1873, I asked Don Bosco why Marchioness Uguccioni and her family were so obliging to him and so generous toward the Oratory. In reply he told me confidentially of her godson’s illness and cure.
The marchioness never forgot that remarkable incident, and in 1887, during Don Bosco’s last visit to Florence, the marchioness one day at dinner described at length her godson’s return to life through Don Bosco’s blessing. Lowering his head, Don Bosco blushed and kept silent. When questioned in his last years of life, Don Bosco confirmed the facts, but then, after a short pause, he added with an expression of profound humility, “Perhaps the boy was not really dead!”