Answer:
Your term of service depends on whether you are a petit juror or a grand juror, and where you have been summoned to serve.
Term of service for petit jurors: Jurors are required to be on call for a period of one month unless otherwise indicated. Some service times are longer in length. During your on-call service, you may be called to serve on any of the dates listed on your initial reporting instructions.
Term of service for grand jurors: If you are selected as a grand juror, the term of service is 18 months with no maximum number of times to report. In most instances, you will be required to report once a month until your term has expired.