Mark Wahlberg is a day older than me.
Will Arnett is a day older than I am. Nobody I recognized born on my actual birthday.
The best one near me: Anthony Hardwood.
As you might be able to guess, he’s a porn star. I find it comforting that a man my age could make his living that way. 
I’m one day older than some guy I don’t know called Brett Favre, who is some sort of football guy.
Sinead O’Connor is one week younger than I am and Troy Aikman was born 10 days before me. The kid who played Albert on LITTLE HOUSE ON THE PRAIRIE (Matthew Laborteaux- his brother was also on LHOP and later on JAG) was born the same day by some accounts but not sure how notable he is since he hasn’t acted in many years.
Mick Jagger is only twelve days younger than I am. He was born July 26, 1943. Where does he get all of his energy?
Oh. Nevermind.
There are six Jackson brothers. The three oldest, Jackie (Sigmund), Tito (Toriano), and Jermaine formed their original band which was called the Jackson Brothers. Marlon and Michael later joined and they changed the name to the Jackson Five. It was under this name they were signed to Motown and became famous (with Motown changing the band’s name to the Jackson 5). In 1975, the band decided to switch to CBS. Jermaine decided to stay with Motown to work on a solo career. Randy (Steven), the youngest brother who had occasionally been performing with the band, was given an official spot in the line-up. But due to contractual rights, the band had to change its name to the Jacksons. Which was just as well, because by now sisters Janet, LaToya, and Rebbie (Maureen) were regularly performing with their brothers.
Nobody I recognized shares my exact birthday. I need to get famous! 
Mary Elizabeth Mastrantonio is a year older than me, and RuPaul a year younger. I also share a birth day and month, but not year, with: Lise Meitner, Eugene Wigner, Shelby Foote, Rock Hudson, Gordon Lightfoot, and Martin Scorsese, among many others.
Diverse group!
From IMDB, people born within a week of me, in the same year, include: Mackenzie Philips, Allison Janney, Sean Young, and the late Dominique Dunne.
Why do I recognize the names of actresses that are my age more than I recognize actors?
According to imdb, there are several actors born the same day as me, but the closest to being famous are Amy Locane (lots of roles, none of them big) and adult film star Tiffany Towers.
Tennis player Arantxa Sánchez Vicario was born the day before me.
Alyssa Milano was born exactly one year after.
Both Clive Owen and Tommy Lee are 3 days older than me. That’s an interesting duo.
Eytan Fox, Israeli actor from the movie Yossi & Jagger, a story about two male Israeli solders. Netflixable, and not really all that gay. Seriously, not very gay for the prudish. More Israeli than gay.
Mackenzie Crook. The guy from Pirates of the Carribean w/ the glass eye.
The only one close from the IMDB page is Ron Livingston. There are others but I have never heard of them.
I am eight days older than you are.
I was born in a bad year. The only “celebrity” even remotely close to me is Kevin Federline.
You have my heartfelt sympathy. At least you have the distinction of reminding me of:
Ryan Reynolds. Sigh - I’m four days older than Ryan Reynolds. And definitely not as fit. He’s hotter than liquid sex.
Emily Deschanel is 8 days older than me. She’s apparently the main character on Bones (I’ve never seen it.)
I am 6 days younger than actor David Schwimmer (11/12/66).
I am one day younger than actresses Daisy Fuentes and Sophie Marceau (11/17/66).
I am one day older than celebrity chef Rocco DiSpirito (11/19/66).
I am 3 days older than football great Troy Aikman (11/21/66).
Daisy, Sophie, hot tub party?
Well, I can’t tell you how thrilled I am to find that Hal Wamsley and I were born on the same day!
And Victoria Paris is only 2 days younger.
The first names I recognized were Amy Grant and John Kennedy, Jr., who were both 5 days younger than me. And RuPaul is 3 days older.
Here’s one close to my heart. , Lisa Welch, Playboy’s Playmate of the month September 1980, was born 9 days before me.
broken linkhttp://play mate.freeweb.hu/html/8009.html The summer of 1980 I was working in the bindery at W.F. Hall, printer of various mags and catalogs including Playboy. That was the first time a Playboy centerfold was so close to my own age. Before that they had always been “older women.”
I was born the same day as Juliette Lewis. There’s also a long list of other people on IMDB that I didn’t know, mostly because they are production people.
I do share the same birth day with Kip Winger, I’m not sure if that’s cool, goofy or what. And also Prince William.