(a) For the purpose of division of the community estate upon dissolution of marriage or legal separation of the parties, except as provided in subdivision (b), the court shall value the assets and liabilities as near as practicable to the time of trial.
(b) Upon 30 days’ notice by the moving party to the other party, the court for good cause shown may value all or any portion of the assets and liabilities at a date after separation and before trial to accomplish an equal division of the community estate of the parties in an equitable manner.