When you start a new game in Oblivion the day is 27th of Last Seed 3E 433.
Excellent. Thank you. Now I need the moon phase and the rate that the moon phases change.
I did a little research and came up with this, yet it still has to be confirmed (a really old cached link, thank you Google.) This is all quoted:
"Tamriel has two moons,Masser and Secunda. You can enable or disable them and set the phase length. Moons have 8 phases in Oblivion and the default phase length is 3 days. This results in a complete moon cycle of 24 days."
"In Daggerfall, a lunar cycle was 32 days (or maybe 24 or 27; don't remember exactly). Secunda's phase was always a few days behind Masser's.
In Morrowind, Masser took 24 days to fully cycle, while Secunda cycled 1.5x faster.
In Oblivion, both Masser and Secunda took 24 days to cycle, and their phases were in sync."
"Alright, let's use Morrowind's cycles, because that actually theoretically lets us get all of the Khajiit's forms. Daggerfall wouldn't let us have a Full/New combination and Oblivion's moons would make nothing but Senche, Cathay-Raht, Pahmar, and Dagi-Raht. Assuming that both moons spend the same percentage of their time waxing and waning that the RL moon does, we can figure out rates."
http://i153.photobucket.com/albums/s221/silverhawk100/KhajiitBirthCalender.png?t=1303185804 (Note, from this current calculation, it is impossible for there to be Ohmes Khajiit and that Suthay-raht is actually rare, which kinda contradicts the lore.)
If someone could figure this out further, that's be awesome for all Khajiit fans.