Within the same time the respondent must transmit, mail, or deliver a copy of the brief in opposition to counsel for petitioner. Motions for an extension to this briefing deadline must be filed no later than 10 days after the expiration of the deadline. For the purpose of Rule 5A:13(a)(3) & (5), a petition is considered served three days from the date on which it was mailed, or one day from the date on which the petition was faxed, emailed, or sent by commercial delivery service, to counsel for the respondent. *
Va. Sup. Ct. 5A:13