The action authorizing the curfew shall provide for reasonable efforts to inform the public in advance of the curfew, which shall be valid for no more than 24 hours. The curfew shall not be extended or renewed unless by recorded vote of the local governing body or by judicial order.
In such circumstances the governing body may convene immediately in a special meeting and enact an emergency ordinance or ordinances, including an extension or renewal of a curfew, for such purposes, notwithstanding any contrary provisions in any charter or under the general law.
Va. Code § 15.2-925