Somebody contributes that you probably meant Section 647(a):
Quote Quoting California Penal Code § 647
Every person who commits any of the following acts is guilty of disorderly conduct, a misdemeanor:

(a) Who solicits anyone to engage in or who engages in lewd or dissolute conduct in any public place or in any place open to the public or exposed to public view.

* * *
That could encompass a great deal of conduct. If you can determine the county where the conviction occurred, you should be able to have them pull the file from the criminal prosecution out of storage. (I'm assuming this was long enough ago that it will have to be retrieved from storage - check with the court clerk.) You can then read the file and will probably be able to figure out what was alleged to have happened.