April 1, 2011 – Gregorian Calendar day. This day marked the 91st anniversary of the birth of Toshirō Mifune. April 1 is normally the 91st day of the year, although leap years push it to 92nd. In 2011, it appeared on a Friday, which is one of the seven possibilities. In some parts of the world, the weather was very pleasant, although it was less so elsewhere.