This apparition to Sister Lucia is less well-known and yet it is significant

The date of May 29, 1930, is not well known in the history of Fatima, Portugal. Yet this is an important date, almost as important as that of May 13, or October 13, 1917. Indeed, a few days before May 29, the Blessed Virgin appeared to Lucia, who was then a novice at the Sisters of St. Dorothy in Tui, Spain, indicating that the time had come to ask the Holy Father for the approval of the reparatory communion of the first Saturdays of the month.

This request was the culmination of various celestial interventions since 1917, including that of December 10, 1925, in Pontevedra, where Our Lady, as she had promised, appeared to Lucia, then a postulant at the Sisters of St. Dorothy’s convent, to give her the details of the devotion of the First Saturdays of the month and ask her to begin to spread it.

Immediately, Lucia confided everything to her confessor, Don Lino Garcia. On February 15, 1926, the Infant Jesus appeared to Lucia in Pontevedra. At her request, he relaxed the conditions set by the Blessed Virgin two months earlier and confirmed the will of Heaven to see this devotion spread.

www.fatima100.fr/en/the-newsletters/288-28-our-lady-asks-for-the-consecration-of-russia-to-her-immaculate-heart