So on Saturday September 23^rd at 04:03 a.m. (or Friday night at 9:03 p.m. for me in the Pacific time zone) the Sun will cross from the northern celestial hemisphere to the southern one, and most people will say it’s the start of autumn in the northern hemisphere.

I don’t say that, I say it’s the middle of autumn. But I have to explain this four times every fracking year, so instead of saying it again I’ll just point you to the blog entry I wrote in the spring about seasons and equinoxes and eggs.

Tip o’ the artist’s beret to BABloggee Steve Kluge for the great diagram!

For your Friday amusement:

Best.

Evah.

Via Pharyngula. Please keep the comments clean, folks.

Update (mar 26 2008): The link has been updated, since the old one is now 404.

On Monday at 6:30 p.m. I’ll be in Oakland, California talking Bad Astronomy smack to the Bay Area Skeptics. You can get more info on my calendar page or on the the BAS page for the talk. I’m pretty sure it’s free, but then, you get what you pay for.