The world is filled with anniversities, commemorations and memorials.

IMO also has special days and September 29, 2011 will be World Maritime Day. It would be easy to be cynical about yet another "special" day. But if there can be a national pickle day, or even a day that commemorates the Irish, it is simply a non brainer that each year we stop for a minute and contemplate the effect of martime on the world. This year the day will take special notice of piracy and the effect it has on today's maritime commerce. 

http://www.un.org/en/events/maritimeday/