Name that anniversary

It's been quite a year for centennials.

18th June  was the Octocentenary of the sealing of Magna Carta in 1215;

14th November will see the Tricentenary of the Battle of Preston when the Jacobite Rebellion under the Old Pretender was ended in 1715;

18th June was the Bicentenary of the final defeat of Napoleon at Waterloo in 1815 and thus the end of the Napoleonic Wars;

and 16th September was the Centenary of the first meeting of the Women's Institute in the UK at Llanfairpwllgwynyll. 

But today is the Sexcentenary of the Battle of Agincourt in 1415. 

I wonder what 2015 will be remembered for?