In almost all cases pending in United States federal courts, depositions are carried out under Rule 30 of the Federal Rules of Civil Procedure. About 35 states use versions of the FRCP in their state courts. Other states have discovery rules that are set out either in court rules or statutes, and which vary somewhat from one state to another. According to FRCP Rule 30, the number of depositions is limited to ten depositions per side (i.e. plaintiffs and defendants), with deposition of each deponent limited to a single day of no more than seven hours (unless specified otherwise in local rules of the district).