Yes, it's that day - three better than 9-9-9 last year. But not as good as next year's 11-11-11 (which will occur precisely *two months* two days after the 10th anniversary of 9-11-01)

As someone has pointed out to me, you have to be careful because the UK and US date conventions are different. So remember, in the UK it's 10-10-10, while in the US it's 10-10-10. See the difference? More on this later.

Several people have remarked that 101010 in binary is the number 42 in base 10 (our more familiar human mathematical base, presumably originating because of our 10 digits), thus invoking the godfather of this blog, Douglas Adams. 42, was (and presumably remains) the answer to the Ultimate Question. Unfortunately, we never got to know the question, so the answer is, to say the least, open to interpretation.

Sadly, though, the renewed interest in Douglas Adams and the Hitchhiker's Guide to the Galaxy is somewhat misplaced.

*By the way, doesn't it sem like the titular gadget from the books has already come to pass already as a combination of the iPhone, Google, and wikipedia - throw in Amazon.com and you can go one better - you've got all the world's knowledge and a means to buy whatever you want, wherever you want.*

While there is some debate and possible confusion, the answer 42 was actually in base 13, meaning that it is actually 54 in base 10 (4x13 + 2 = 54 in base 10). As noted in the link, Arthur Dent drew out Scrabble tiles spelling out 'What do you get if you multiply six by nine?".Which is, of course, 54 in base 10. As some people figured out the 6x9=42 in base 13 answer, Adams remarked that he disn't write jokes in base 13. But who knows? Maybe he did.

So the answer to the ultimate question in binary is actually 110110. And here's where the US/UK date conventions come into play. In the UK, the day has already happened - 11th Jan 2010, whereas in the US it will occur in about three weeks on the 1st Nov 2011 *2010*.

(D'oh - corrected as noted in italics above).