May 13 is the 133rd day (134th day of a leap year) in the Gregorian calendar.
1950 - Formula One racing for the first time is held at the Silverstone circuit, England.
1969 - May 13 Incident: Chinese-Malay racial riots in Kuala Lumpur, Malaysia; at least 184 died.
1981 - Mehmet Ali Ağca shoots and seriously wounds Pope John Paul II in St Peter's Square, Vatican.
1998 - Major riots engulf the city of Jakarta (until 15 May) and finally trigger the resignation of president Suharto a week later and the Reformation Order begins to replace the New Order.
2018 - Surabaya City Church Bombing; at least there were bombings of 3 churches in the city of Surabaya, at least 13 died.
1888 - Inge Lehmann, German sociologist. (d. 1993)
1991 – Francis Coquelin, French footballer.
1993 - Debby Ryan, American actress and singer.
Holidays and anniversaries
1964 - Hijri New Year 1394.
1987 - Vesak 2531 BE.
1999 - Ascension of Jesus Christ.
2006 - Vesak 2550 BE.
2010 - Ascension of Jesus Christ.
2021 - Ascension of Jesus Christ.
2021 - Eid Al-Fitr 1442 Hijri. 12 May - 13 May - 14 May