Today is the International Day of Happiness.

Grammy winner and Happy singer Pharrell Williams teamed up with the United Nations Foundation to celebrate the feel-good day.

"The pursuit of happiness lies at the core of human endeavours. People around the world aspire to lead happy and fulfilling lives free from fear and want…" said UN Secretary-General Ban Ki-moon.

Every hour, as each time zone reaches noon, 24hoursofhappiness.com is featuring a new user-submitted video of Pharrell's global hit about happiness.

Here's Pharrell's original:

Some of the #HAPPYDAY videos featured so far include the following:

From the U.K.:

From the Ivory Coast:

From Tunisia — with a few of your favourite Star Wars characters:

And from Shanghai:

And if you're looking for a soundtrack for your day, here's a compilation of some of the best viral Happy covers online right now.

Pharrell is also using the International Day of Happiness to raise money for the UN's Central Emergency Response Fund, which helps "the UN and its partners provide fast and reliable humanitarian assistance."

The Independent shared what makes them smile: Every Christopher Walken dance scene ever.

And Coca-Cola is celebrating happiness with a cheerful mash-up of songs from around the world.

Another thing: It's the first day of spring. All the more reason to smile.

Share what makes you happy in the comments below.

Have a happy day!