Today, 278 years ago, the city of Livorno, Italy, was hit with an Earthquake.
This earthquake was the last of a series of small earthquakes, which started a few weeks earlier.
The Jewish quarter miraculously survived the earthquake with no damage. This day, 22 Shevat, was instituted as a “Purim Sheini”, which started as a day of fast and prayer. On Shabbos, they said Hallel HaGadol – “Praise to Hashem, for He is good, His steadfast love is eternal.”
Sources: see Wikipedia