31 May

1911 - Launch of the Titanic's hull

On 31 May 1911, the hull of the Titanic was launched at Belfast.

1859 - Big Ben starts keeping time

On 31 May 1859, the great Westminster clock, Big Ben, began keeping time in London.

1669 - Last entry of Pepys's diary

On 31 May 1669, Samuel Pepys wrote the final entry of his famous diary.