The science wizards (or “imagineers” or whatever) at Disney have done the math, and it shakes out thusly: There are…

“Unto The Breach,” season seven, episode 21, originally aired 5/8/2007 

“It’s Just Like Riding A Bike,” season seven, episode 19, originally aired 4/24/2007 

“Gilmore Girls Only,” season seven, episode 17, originally aired 3/6/2007 

“I’m A Kayak, Hear Me Roar,” season seven, episode 15, originally aired 2/20/2007 

“I’d Rather Be In Philadelphia,” season seven, episode 13, originally aired 2/6/2007 

“Santa’s Secret Stuff,” season seven, episode 11, originally aired 1/23/2007 

“Knit, People, Knit!,” season seven, episode nine, originally aired 11/28/2006 

“French Twist,” season seven, episode seven, originally aired 11/14/2006 

“The Big Stink,” season seven, episode five, originally aired 10/24/2006 

“Lorelai’s First Cotillion,” season seven, episode three, originally aired 10/10/2006 

“The Long Morrow,” season seven, episode one, originally aired 9/26/2006 

“Driving Miss Gilmore,” season six, episode 21, originally aired 5/2/2006 

“I Get A Sidekick Out Of You,” season six, episode 19, originally aired 4/18/2006

“I’m OK, You’re OK,” season six, episode 17, originally aired 4/4/2006

“A Vineyard Valentine,” season six, episode 15, originally aired 2/14/2006  

“Friday Night’s Alright For Fighting,” season six, episode 13, originally aired 1/31/2006

“The Perfect Dress,” season six, episode 11, originally aired 1/10/2006 

“The Prodigal Daughter Returns,” season six, episode nine, originally aired 11/15/2005

“Twenty-one Is The Loneliest Number,” season six, episode seven, originally aired 10/25/2005