Seems a tad bit medival, but may be a good reason not to celebrate my birthday tomorrow, not to mention that it is also "National Slayer Day":
(As reported by the BBC today:)

"Prayer vigil targets Devil's Day
The Devil hates it when we worship God, say organisers
Dutch evangelical Christians are to hold a round-the-clock prayer vigil to ward off the forces of evil on Tuesday - the so-called Devil's Day.
They believe that the sixth day of the sixth month of 2006 has great significance for evil-doers and Satanists who revere the number 666.
In a bid to counteract the forces of evil, more than 2,000 Dutch Christians will hold "a violent day of worship".
They will be joined by Christians in 23 other countries, organisers say.
The reference to 666 is taken from the Biblical book of Revelation, which talks about the events leading to the end of the world.
Revelation 13:18 states: "If anyone has insight, let him calculate the number of the beast, for it is man's number. His number is 666."
Omen launch
Behind the initiative is a Dutch evangelical organisation called Ambassadors Ministries.
On this date, Satanists will try and do many things, so we Christians try and do the opposite
Mathijs Piet Ambassadors Ministries
Mathijs Piet, one of the organisers, told the BBC news website that the prayer marathon was to officially start at 1800 on Monday with a prayer rally in Jerusalem.
"666 is the number of the Devil and we know that on this date, Satanists will try and do many things, so we Christians try and do the opposite," Mr Piet said.
"We know the Devil hates it when we worship God."
Organisers expect at least 2,000 Dutch evangelicals to take part in the mass prayer vigil across the Netherlands.
They are not the only ones to note the significance of the date.
Film company 20th Century Fox has chosen the same date to launch its remake of the 1976 horror classic The Omen, in which a man comes to realise his son is the Antichrist.
The fear of the number 666 is known as hexakosioihexekontahexaphobia."

Thanks to all who showed their smiling little aborable faces at my b-day get together at the Stumbling Monk - you guys are GRRRRRRRRRRRREEEAT! And the bizzarrrre gifts- Brandon's well-wrapped oversized Post-Its along with hot pink and totally toxic taggin marker, massively cool mechanical pencil- yes! Jon and Jody's "Delta Force" Special Ops starter-kit/playset, which included a field-cellphone (which actually works) a very "Universal Soldier-meets-Borg" night-vision monacle headpiece, which- of course- everyone was forced to try on. I'd have to say that it suited Josh and Brandon the best. The fake plasic grenade, which is not hanging in my bathroom, the dog-tag that didn't really give enough room to fill-in your info, but I got it all on there anyhow, and the Rambo knife, which I was afraid to take out of the packaging because it was so darn menacing-looking. The binoculars- which made everything look not closer, just wiered are glowier- Oh, and can't forget the canteen which was graciously filled with Belgian beer (Jenny/Jody's idea)by the bearded guy who works there, thus giving it a marvelous PVC aftertaste. Greg Bordreau brought by one of the paintings for the Anti-Terrorist Handbook show- my favorite, as a gift, so good!!! I don't know how many folks cycled through, but many more thatn I'd expected to come out on a Wednesday night. Straight silly. Brandon kidnapped me and took me to a "surprise" which ended up being pool at the Cuff (eeek!) I always feel like a poser as a straight boy going to a gay bar... but it was kinda fun.