Duration of a conspiracy is the length of time required for a criminal plan to be carried out. It is the period between the initial agreement to commit a crime and the completion of the act. There are two main types of duration of a conspiracy: immediate duration and extended duration. Immediate duration is the shortest amount of time required for a criminal plan to be completed, usually no more than one day. This type of duration is typically used when the conspirators are in close physical proximity to one another and the plan can be executed quickly. Extended duration is the longest amount of time required for a criminal plan to be completed, usually spanning several weeks or months. This type of duration is typically used when the conspirators are distanced from one another and need time to arrange meetings, transport equipment, and coordinate details of the plan.