In the Rhineland, the Carnival season is considered to be the "fifth season of the year", starting on November 11 at exactly 11:11 a.m.

From http://en.wikipedia.org/wiki/Fasching

That day is already taken for something more important than a launch in UK http://en.wikipedia.org/wiki/Remembrance_Day

WWI ended on the 11th. I imagine that the UK is not alone when it comes to 11/11 having a special place on the calendar. In the US the 11th (or closest weekday) is Veterans Day.

Rememberance Day seems to have more in common with our Memorial Day than our Veterans Day.

In the U.S., remember Veterans.

In Poland it's Independence Day (Poland regained independence after 123 years of occupation in November 1918, 11th was choosen as holiday).

I'm waiting until 20/11/2011 20:11. Doesn't clash with anything.

The Elder Scrolls: Skyrim!!! Although, not launched at 11:11..

I'd expect a link that can add an event on this date to iCal.