Mary-Kate Olsen and Ashley Olsen were born on June 11th, 1999.
 The first is that the month is named after the Roman goddess Juno, the goddess of marriage and the wife of the supreme deity Jupiter;  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 (Maius) may be named
 For the world UT/GMT the dates are 1920

