Home   Calendar   Holidays   Fun   Richter Scale Day

Apr
26
Fun Holiday – Richter Scale Day

April 26 is Richter Scale Day. The unofficial holiday honors the life and work of American seismologist Charles Francis Richter.

Seismograph for measuring tremors.

A seismograph measures the strength and magnitude of tremors on the Richters scale.

©iStockphoto.com/Shamtor

Born on this day in 1900, Richter was the inventor of the Richter magnitude scale that measures the intensity of earthquakes.

From 1935

Known more commonly as the Richter scale, the scale was invented by Richter in 1935. It measures the magnitude of an earthquake on a logarithmic scale of 0 to 10. Each number on the scale refers to an event that is 10 times more powerful than an event with a number before it. This means an earthquake with a magnitude of 4 is 10 times stronger, and releases approximately 32 times more energy, than an earthquake with a magnitude of 3.

Modern Replacements

The Richter scale has now been replaced by more modern scales that calculate the magnitude and strength of earthquakes around the world. Despite this, the media commonly, but mistakenly, uses the term Richter scale when identifying the device that measures earthquakes.

How to Celebrate?

  • Learn more about the Richter scale and how it is used to measure the intensity of earthquakes.
  • Visit your local space or science museum to learn more about earthquakes and what causes them.
  • If you live in an earthquake-prone area, why not use to the day to run some emergency earthquake drills and ensure that your emergency supplies are up to date and easily accessible?

Did You Know…

…that earthquakes lower than 2.5 on the Richter scale are almost never felt by humans?

Richter Scale Day Observances

Fun Holiday: Richter Scale Day Observances
YearWeekdayDateName
2019Fri26 AprRichter Scale Day
2020Sun26 AprRichter Scale Day
2021Mon26 AprRichter Scale Day
2022Tue26 AprRichter Scale Day
2023Wed26 AprRichter Scale Day
2024Fri26 AprRichter Scale Day
2025Sat26 AprRichter Scale Day
2026Sun26 AprRichter Scale Day
2027Mon26 AprRichter Scale Day
2028Wed26 AprRichter Scale Day

See all Fun Holidays

January 2019
MTWTFSS
 123456
78910111213
14151617181920
21222324252627
28293031   
February 2019
MTWTFSS
    123
45678910
11121314151617
18192021222324
25262728   
March 2019
MTWTFSS
    123
45678910
11121314151617
18192021222324
25262728293031
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930     
May 2019
MTWTFSS
  12345
6789101112
13141516171819
20212223242526
2728293031  
June 2019
MTWTFSS
     12
3456789
10111213141516
17181920212223
24252627282930
July 2019
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
293031    
August 2019
MTWTFSS
   1234
567891011
12131415161718
19202122232425
262728293031 
September 2019
MTWTFSS
      1
2345678
9101112131415
16171819202122
23242526272829
30      
October 2019
MTWTFSS
 123456
78910111213
14151617181920
21222324252627
28293031   
November 2019
MTWTFSS
    123
45678910
11121314151617
18192021222324
252627282930 
December 2019
MTWTFSS
      1
2345678
9101112131415
16171819202122
23242526272829
3031     

See all Fun Holidays

Advertising

26 April 2019 – Other Holidays this day

Show

Create Calendar with Holidays


Add Event to Calendar

Other Fun Holidays around 26 April

25 Apr

DNA Day

DNA Day on April 25 celebrates and recognizes the importance of genetics and the scientific advances made in the field of genetics.

26 Apr

Pretzel Day

Pretzel Day is a made-up holiday devoted to everyone’s favorite snack with beer – pretzels.

28 Apr

World Pinhole Photography Day

World Pinhole Photography Day on the last Sunday of April celebrates the art and science of pinhole cameras and photography.