Cal. Fam. Code § 6326

An ex parte order under this article shall be issued or denied on the same day that the application is submitted to the court, unless the application is filed too late in the day to permit effective review, in which case the order shall be issued or denied on the next day of judicial business in sufficient time for the order to be filed that day with the clerk of the court. A petition for an ex parte order pursuant to this article shall not be denied solely because the other party was not provided with notice.