What Day was Chelsee Born?

Does anyone have a clue what day Chelsee was born last year? I mean we celebrated Tex's birth back in the day but I don't recall seeing anything about Chelsee's birthday. I believe she stated it to be "2013" in the Radio Theater episodes when they were getting their cards read. Was there anything stating what the actual day was? Did I hear 2013 wrong? I haven't heard the radio show for a while so I might be completely wrong.
Her 30th birthday is mentioned specifically in Pandora Directive, which takes place during 2043. Math claims last year as being correct.

Now, if we could find out any of the dates for any of the days of PD...

-Fred
Pirates, vampires, zombies, ninjas, ghouls, aliens, goblins, monsters, robots, sorcerers, undead, werewolves, demons, mutated dinosaur-cyborgs and those pesky phone salesmen! The shotgun is a one-size-fits-all solution!
Day 5 is April 17. This can be determined because Tex finds the postal receipt in the warehouse dated April 8 and says it was nine days ago.

That means day 1 is April 13. Since Chelsee said her birthday was tomorrow, she was born April 14, 2013.
Math is fun, you guys!

-Fred
Pirates, vampires, zombies, ninjas, ghouls, aliens, goblins, monsters, robots, sorcerers, undead, werewolves, demons, mutated dinosaur-cyborgs and those pesky phone salesmen! The shotgun is a one-size-fits-all solution!
I actually have to correct myself. Her birthday is April 13. When she said her birthday was tomorrow that was before day 1. The intro takes place the night before as Tex does mention that Chelsee is probably upset with him about "last night".
It's very good that you remember about Chelsee. Please, visit my thread: http://www.unofficialtexmurphy.com/mess ... f=1&t=4759
Truly yours,
Alexander.
(С уважением,
Александр).
April 13 - thanks for that. I remember people had worked it out but I couldn't remember myself.
David
WOW, did I brain fart on that one. I completely forgot about the whole birthday thing in Pandora Directive, and that's my favourite of all the Tex games! Looks like I'm going to have to replay that little gem just to remind myself of this stuff.

Anyway, you guys solved that much faster than I had anticipated. Seeing as I forgot about the birthday in PD, I was expecting the info to come from an instruction manual or an interview or something. Good job guys!
Tex doesn't like math though....