Listen to 24 Hours of Happy Radio on iHeartRadio

Pharrell Williams is putting smiles on faces across the world for today's second annual International Day of Happiness supporting CERF, the Central Emergency Response Fund.


The Grammy-winning producer has partnered with the United Nations Foundation to put together a whole day's worth of YouTube and Instagram videos set to his hit single "Happy." 

Pharrell has been collecting the videos since Monday and started debuting them at at 8:00 p.m. Eastern on Wednesday night.  As each time zone across the world strikes noon, a new set of videos is unlocked.  

iHeartRadio is getting in on the fun, celebrating the International Day of Happiness the best way we know how - with Pharrell's "Happy" 24/7! The station will play "Happy" through the end of the month for charity.

Click below to enjoy 24 Hours of Happy Radio, only on iHeartRadio.

 Pharrell's "Happy" is currently sitting on top of Billboard's Hot 100 songs chart.  It has spent four weeks as the nation's top song. 

Check out some of the videos below!

Photo Credit Getty Images