So you came here to ask what? If ^^this^^ is the answer to your question then what would you like to know?
What is it about your error that makes the citation defective and invalid? Clearly, the date you committed the violation was corrected... In fact, you were there so it being listed different on the citation is not likely to make it defective. It simply makes it correctable.... ANd it was corrected accordingly. The name difference would not be a material defect by virtue of you standing there in court saying "I am here to fight this citation that I received when I was driving on March 16th, 2013 but this is not my name".
Are you expecting the judge to say "oops... sorry for the inconvenience, you are free to go" or.. Do you think he will say "what is your name and can I see you r ID?" (and you can play the "I don't have my ID" game but that could mean you will be held in custody until your identity can be determined) then he will add "we will just scratch that name and put in yours which obviously matches the name on the driver's license and the DL number clearly matches that which is on the citation, so we know it was you at the time of the stop".
Were you under the impression that a correction has to happen on a correction form? A better question: how does the error impact the possibility of whether you committed the violation or not? If it does, fine you got a point, if it doesn't, then you can expect it to be corrected and the case will proceed as planned!
Furthermore, you say the trial is on January 30th... Were you arraigned already? Did you enter a plea or are you going to do that on January 30th? If you've entered a plea and did not motion for a dismissal because of the error (motion would have been denied anyways) then by definition, you waived your right to demur and are bound by the plea you entered at which time the error will be considered a harmless error and it will be corrected on the record and the trial will proceed. If you haven't entered a plea then you can try and demur before you enter a plea at which time the error will be reviewed, the court will decide it is a harmless error and you will be ordered to enter your plea and proceed to trial.
You are free to try a demurrer if you would like but would be advised to better review the court's local procedures for filing motions, review PENAL CODE SECTIONS 1002-1012 regarding Demurrers and Amendments, file it in a timely manner and serve the county D A's office (or the L A city attorney if this was in the city of LA) accordingly. I think you would be wasting your time and effort but you're free to explore that option if you choose.
In summary, and whether it is long before or shortly before , the error will be corrected before trial.

