The Board shall determine how much service in any month is the equivalent of a month of service or how much service in any year is the equivalent of a year of service. The Board shall not allow more than one year of service credit for all service rendered in any period of twelve consecutive months.
Service equivalents
Va. Code Ann. § 51.1-141, under Chapter 1. Virginia Retirement System..
Va. Code Ann. § 51.1-141