Earlier practice was to specify the parliamentary session by the year in which it "started" only – and sometimes to date its Acts accordingly. So, for example, the Adventurers Act was passed by the session 16 Cha. 1 in 1642 and is cited as 16 Cha. 1 c.33. That session began in 1640. In consequence the Act is often referred to as the Adventurers Act 1640: despite being passed in response to events in 1641.