https://en.wikipedia.org/wiki/January_1938_geomagnetic_storm

>The term "Fatima Northern Lights" refers tothe spectacularaurora borealisdisplay on January 25-26, 1938, which was interpreted by some as a fulfillment of the "unknown light" prophecy from the apparitions of Our Lady of Fatima. The apparition was said to foretell a great sign that a period of punishment, likely a second world war, was about to begin if humanity did not turn back to God.