May 20th, 1257

Born on May 20th, 1257

Age in days, weeks and months
Wow, over 280,000 days old!

Why not celebrate an alternative birthday? In 62 days, exactly on September 26th, 2026, people who were born on May 20th, 1257 will be 281,000 days old!

... in seconds, minutes and hours

What happened on May 20th?

May 20th, 2013

A tornado struck Moore, Oklahoma, United States, killing 24 people and causing an estimated $2 billion of damage.

May 20th, 2012

The first of two major earthquakes struck Northern Italy, resulting in seven deaths.

May 20th, 1983

uMkhonto we Sizwe, the paramilitary wing of the African National Congress, detonated a car bomb in Pretoria, resulting in 19 deaths and 217.

May 20th, 1965

While attempting to land at Cairo International Airport, Pakistan International Airlines Flight 705 crashed for unknown reasons, killing all but 6 of the 121 people on board.

May 20th, 1947

The first session of the National Diet opened in Tokyo, Japan.

May 20th, 1943

The Luttra Woman, a bog body from the Early Neolithic period, was discovered near Luttra, Sweden.

May 20th, 1941

World War II: German paratroopers began the Battle of Heraklion on the island of Crete, capturing the airfield and port in Heraklion ten days later.

May 20th, 1927

With the signing of the Treaty of Jeddah, the United Kingdom recognized the sovereignty of Ibn Saud over Hejaz and Nejd, which later merged to become Saudi Arabia.

May 20th, 1875

Representatives from seventeen countries signed the Metre Convention, which set up an institute for the purpose of coordinating international metrology and for coordinating the development of the metric system.

May 20th, 1609

Thomas Thorpe published the first copies of Shakespeare's sonnets, possibly without William Shakespeare's consent.

May 20th, 0794

According to the Anglo-Saxon Chronicle, King Æthelberht II of East Anglia was beheaded on the orders of Offa of Mercia.

May 20th, 0685

The Picts defeated the Northumbrians at the Battle of Dun Nechtain, severely weakening the latter's power in northern Great Britain.

May 20th, 1515

Ulysses, who would be famously depicted in a posthumous woodcut, landed in Lisbon, becoming the first of his species to visit Europe in a thousand years.

May 20th, 1714

J. S. Bach led the first performance of his Pentecost cantata Erschallet, ihr Lieder at the chapel of Schloss Weimar.

May 20th, 0325

The First Council of Nicaea (depicted), the first ecumenical council of the Christian Church, was formally opened by Constantine the Great.

Public holidays on May 20th

Fixed holidays (Christian feast day, National Awakening Day) which are celebrated on May 20th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1257 is a normal year and no leap year.

Calendar
May 1257