From The Art and Popular Culture Encyclopedia
June is the sixth month of the year in the Julian and Gregorian calendars and one of the four months with a length of 30 days. Ovid provides two etymologies for June's name in his poem concerning the months entitled the Fasti. The first is that the month is named after the Roman goddess Juno, wife of Jupiter and equivalent to the Greek goddess Hera; the second is that the name comes from the Latin word iuniores, meaning "younger ones," as opposed to maiores ("elders") for which the preceding month May may be named (Fasti VI.1–88). See: Months in various calendars also called the season of the unicorn.
In both common and leap years, no other month begins on the same day of the week as June. This month and May are the only two months that have this property. June ends on the same day of the week as March every year.
June is the month with the longest daylight hours of the year in the Northern Hemisphere and the shortest daylight hours of the year in the Southern Hemisphere.
At the start of June, the sun rises in the constellation of Taurus; at the end of June, the sun rises in the constellation of Gemini. However, due to the precession of the equinoxes, June begins with the sun in the astrological sign of Gemini, and ends with the sun in the astrological sign of Cancer.
June is known for the large number of marriages that occur over the course of the month. According to one etymology, June is named after Juno (Hera). Juno was the goddess of marriage and a married couple's household, so some consider it good luck to be married in this month.