International Day of Happiness
In 2012, the United Nations declared that every March 20 shall be a an International Day of Happiness, and who are we to argue?
A smiling cloud floats over the River Thames and past St. Paul's Cathedral, in London, Wednesday Feb. 25, 2009, as part of the art installation entitled 'Happy Cloud' by British artist Stuart Semple.
Snowflake hunt
An unidentified schoolteacher tries to catch snowflakes while leading her students in the Harlem, New York on January 10, 2014.
Happiness from Peru
This carved ekeko figurine by Peruvian artist Johnny Chamba is a traditional Andean character said to bring happiness, love and prosperity.
Happy, literally
Pharrell Williams, center, performs "Happy" during the Oscars at the Dolby Theatre on Sunday, March 2, 2014, in Los Angeles.
Happy hatchlings
A National Park officer shows newborn green turtles in Merubetiri National park before releasing them at the beach in Banyuwangi, East Java, on March 25, 2012.
Happy selfie
Ricky Gervais takes a selfie with Muppets Constantine, Miss Piggy and Kermit the Frog in Los Angeles on March 11, 2014.
Return to childhood
Participants take part in International Pillow Fight Day in Cambridge, Massachusetts on April 5, 2014.
Boy in bloom
Kelvin Villaroel holds up son Isaac in front of a blossoming cherry tree in Central Park in New York on April 20, 2014.
Bearing up
A black bear lies on a hammock in a back yard in Daytona Beach, Florida early evening on May 30, 2014.
New mom
Walrus Dyna and her calf look out from their compound as they are presented to the public in Hamburg, Germany, July 2, 2014.
Happy colors
A girl runs with collected autumn leaves at a park in Donetsk, eastern Ukraine, October 17, 2014.
Happy halloween
A polar bear eats a pumpkin during Halloween celebration in the Tiergarten Schoenbrunn zoo in Vienna on October 31, 2014.
Dance for joy
A child dressed as a tiger dances at an annual Halloween block party in Silver Spring, Maryland on October 31, 2014.
Head check
Goat yearlings butt their heads together at a farm in Belarus on December 16, 2014.
Running of the Santas
People dressed as Santa Claus and the Russian equivalent, Father Frost, run a charitable race in Moscow, December 21, 2014.
Masquerading for happiness
Masked Bulgarian children participate in an ancient pagan rite known as "survakari" in the town of Pernik, Bulgaria on Friday, Jan. 30, 2015. The celebration is designed to scare away evil spirits and promote happiness.
Festival of lights
Lanterns are released into the sky at a fair in Zagreb, Croatia, December 22, 2014. The lanterns symbolize the sending of wishes to the universe.
Simple pleasures
A child plays in rainwater in Managua, Nicaragua on September 8, 2014.
Happy New Year
Revelers toss confetti over Times Square from a hotel after the clock struck midnight during New Year's Eve celebrations in New York on January 1, 2015.
Blue heaven
Blue and green dust flies through the air after the annual Color Manila Run in the Philippines on January 4, 2015.
Sweetest dream
A French woman prepares to sleep overnight in the Galeries Lafayette department store with five other hand-picked shoppers in Paris, January 6, 2015.
Mid-air celebration
Bethanie Mattek-Sands (R) of the U.S. and Lucie Safarova (L) of Czech Republic celebrate a victory in a women's doubles final match at the Australian Open tennis tournament in Melbourne on January 30, 2015.
Top model
Model Chantelle Brown-Young struts for the Desigual Fall/Winter 2015 collection during New York Fashion Week February 12, 2015.
Happy to be here
A newborn giant panda appears to smile next to its two siblings from inside an incubator at the Chimelong Safari Park in China on August 9, 2014.
Moon moment
Dancers celebrate the Chinese Lunar New Year at the Happy Valley amusement park in Beijing on February 19, 2015.
Red carpet moment
Mark Critch, Cathy Jones, Susan Kent, Shaun Majumder and Shelby Fenner arrive at the 2015 Canadian Screen Awards in Toronto, March 1, 2015.
Best medicine
A member of 'Laughter Doctors of Ciudad Juarez' performs at a Mexican children's hospital on March 11, 2015.
Joke's on you
Tadjik women throw water on men from rooftop to mark a spring festival in the Kashgar region of China on March 18, 2015.
Go Mickey go
Mickey Mouse and Dumbo watch as Goofy arrives in 'Herbie' the Volkswagon Beetle at Disneyland in Anaheim, California on May 5, 2005.
Splash of happiness
A Scotland soccer fan gets comfy in a fountain in Trafalgar Square in London on August 14, 2013.
Story time
Desmond Allen reads to Ginger the Cat in Birdsboro, Pennsylvania on February 11, 2014.
Catwalk cartwheel
Designer Betsey Johnson does a cart wheel at age 71 following her fashion show in New York on February 12, 2014.
Hero on ice
Spain's Javier Fernandez performs at the Sochi 2014 Winter Olympics in Russa, February 22, 2014.
Big love
Runners dressed in inflatable sumo wrestler costumes prepare to take part in a 3-mile charity run at Battersea Park in London July 28, 2013.
Happy legs
The legs of Italy's Alessandro Diamanti are seen during a soccer match in Brazil on June 27, 2013.