In 1419, Catholic preachers from Dominican monastic orders, excommunicated by Rome, predicted the end of the world. They identified several places where people would be saved while rest of the humanity will die in the Armageddon. First, nobody took them seriously, it was just after Council of Konstantz that dealt with Schism, but as the deadline approached, mass panic hit Kingdom of Bohemia and some places in Holy Roman Empire. People as far from France, England,and Belgium arrived into Bohemia to survive. When the day approached tens of thousands people flocked in hot July days into selected placed to watch the world burn. One place had 40,000 to 60,000 people crammed up to the hill to get a better view. Day came and went and no Armageddon on sight. Hundreds of thousands people abandoned their properties, fields, farms, castles, and businesses for nothing. Subsequent fighting devastated much of Central Europe in war lasting till 1434, where Dominican monks were the prime target of revenge.
Medieval Europe had many dead-end visions. After Frankish empire collapsed, there was hysteria as well around 843. When Goths sacked Rome, the world thought the end was near. St. Augustine wrote his monumental book, City of God under the influence of the event. Many people calculated their prophecy year from the bible. The event from 1419 was also calculated from the Bible.