The arraignment is usually your first appearance in Court after being charged with a misdemeanor offense. If you were issued a citation by a police officer, your arraignment date will appear on the citation. If you were issued a Summons by the Court, your arraignment date will appear on the Summons. If you are released from jail, your release paper should have your arraignment date on it.
At your arraignment, the Judge will inform you of the charge against you, let you know what your rights are regarding the charge and ask you to enter a plea.