The sixth month varies depending on the calendar system being used. In the Gregorian calendar, which is the most widely used civil calendar in the world, the sixth month is June and has 30 days. June is named after Juno, the Roman goddess of youth and protection. In the Hebrew calendar, the sixth month is the 29-day month of Elul that corresponds to August – September. The sixth month of the Jewish calendar is also known as Adar and has between 29 and 30 days, depending on the year. In the Bible, the sixth month is associated with the fulfillment of promises and prophecies, and it is a month of change of stories. In the Gospel of Luke, the "sixth month" refers to the length of time that Elisabeth has been pregnant before the angels visit to Mary.