Conversation so far:
What information did Judith Miller refuse to disclose source for?
Judith Miller refused to testify before a federal grand jury investigating a leak naming Valerie Plame as a CIA officer
Did Judith Miller's information about Valerie Plame eventually come out?
For her second grand jury appearance, Judith Miller produced a notebook from a previously undisclosed meeting. Miller's notebook contains the name Valerie Flame [sic].

Question: When was the court appearance?
Self-contained rewrite: When was Judith Miller's court appearance?