Home   Calendar   Holidays   Fun   Old Rock Day

Jan
7
Fun Holiday – Old Rock Day

January 7 is Old Rock Day. The unofficial holiday encourages people to acknowledge, celebrate, and learn more about old rocks and fossils.

Ammonite fossil.
Ammonite fossil.
Old rocks can contain fossils.
©iStockphoto.com/Matauw

A rock is a solid mass made of minerals or mineral-like substances. Used for a variety of purposes throughout the history of humankind - as tools, musical instruments, weapons and for mining - rocks form the outermost layer of Earth.

A Peek Into Earth's History

While natural processes - volcanic eruptions and erosion - continually help create rocks on Earth, old rocks are especially important to those who study the Earth and its history. Old rocks hold many answers to the mysteries of Earth's formation - they can tell scientists about natural events that played a role in the formation of the rocks and the effects that event had on other life forms in the area.

Old rocks can also sometimes hold fossils - the preserved remains of animals, plants and other organisms. These fossils can help scientists find out the kind of flora and fauna that existed in the past and what may have caused them to evolve or go extinct.

Finding the Age of Old Rocks

Geologists date old rocks using a technique called radiometric dating or radioactive dating. The process involves looking at the decay of radioactive elements available in rocks. The oldest rock of terrestrial origin to be dated using this method is a zircon found in the Jack Hills of Australia. Scientists estimate that the rock could be as old as 4.4 billion years.

How to Celebrate?

  • Learn more about the types of old rocks.
  • Pick up a book about fossils and learn how fossils tell us more about the Earth’s past or visit your local natural history museum.
  • Take a walk in the park and collect interestingly shaped rocks.
  • Buy your loved ones some pretty looking rocks. And by rocks, we mean jewels. After all, diamonds are old rocks.
  • Looking for a new hobby? May we suggest collecting rocks?
  • Find rocks boring? Listen instead to music from old rock bands.

Did You Know…

...that Petrology is the scientific study of rocks?

Old Rock Day Observances

Fun Holiday: Old Rock Day Observances
YearWeekdayDateName
2018SunJan 7Old Rock Day
2019MonJan 7Old Rock Day
2020TueJan 7Old Rock Day
2021ThuJan 7Old Rock Day
2022FriJan 7Old Rock Day
2023SatJan 7Old Rock Day
2024SunJan 7Old Rock Day
2025TueJan 7Old Rock Day
2026WedJan 7Old Rock Day
2027ThuJan 7Old Rock Day

See all Fun Holidays

SMTWTFS
 123456
78910111213
14151617181920
21222324252627
28293031   
February 2018
SMTWTFS
    123
45678910
11121314151617
18192021222324
25262728   
March 2018
SMTWTFS
    123
45678910
11121314151617
18192021222324
25262728293031
April 2018
SMTWTFS
1234567
891011121314
15161718192021
22232425262728
2930     
May 2018
SMTWTFS
  12345
6789101112
13141516171819
20212223242526
2728293031  
June 2018
SMTWTFS
     12
3456789
10111213141516
17181920212223
24252627282930
July 2018
SMTWTFS
1234567
891011121314
15161718192021
22232425262728
293031    
August 2018
SMTWTFS
   1234
567891011
12131415161718
19202122232425
262728293031 
September 2018
SMTWTFS
      1
2345678
9101112131415
16171819202122
23242526272829
30      
October 2018
SMTWTFS
 123456
78910111213
14151617181920
21222324252627
28293031   
November 2018
SMTWTFS
    123
45678910
11121314151617
18192021222324
252627282930 
December 2018
SMTWTFS
      1
2345678
9101112131415
16171819202122
23242526272829
3031     

See all Fun Holidays

Advertising

January 7, 2018 – Other Holidays this day


Create Calendar with Holidays


Add Event to Calendar

Other Fun Holidays around January 7

5 Jan

Bird Day

Celebrate birds and ensure that avians around the world are treated humanely.

6 Jan

Bean Day

Beans are healthy and delicious. Add them to your daily diet starting today.

8 Jan

Earth's Rotation Day

Celebrate the anniversary of the day in 1851 when it was shown that the Earth rotates on its axis.

8 Jan

Clean Off Your Desk Day

Celebrate this productive and fun holiday by keeping your workspace clean and clutter free.