There are dozens of international days for this or that recognised by the United Nations.  They are listed here.

One of them is International Jazz Day which falls today.  It's been going for four years and is being celebrated with concerts throughout the world, including at the Royal Concert Hall in Glasgow.  But the epicentre this year is in Paris where there are multiple events taking place. France holds a very special place in the history of jazz, having welcomed many black American jazzmen who were discriminated against in their own country and given them a space in which to work freely.

The main gig is being held in the Unesco building and is being streamed live over the internet.  I am watching it as I write.  Herbie Hancock has just announced that next year's gig will be hosted by Barack Obama in the White House.  It would be nice to be there but I rather think I'll have to be content with the internet.