National Richter Scale Day is the day to grab hats, double test foundations, and listen out for earth rumblings. This day is a celebration and acknowledgement of Charles F. Richter’s birthday.

The Richter Scale was created by the California Institute of Technology in 1935. The world has been able compare different earthquakes and determine their destructive power since then. On 22 May 1960, Chile recorded the largest earthquake of the 20th century with a magnitude measuring 9.5.

People celebrate by gathering with friends to see their favorite disaster films. Popular choices include 1974’s Earthquake and 1999’s Aftershock. New York Earthquake. 2003’s The Core.