31 May

On 31 May 1911, the RMS Titanic was launched. (PROSE: Time Traveller's Diary)

In 5,000,000,057, the Tenth Doctor and Martha Jones defeated a Cyberman and Judoon plot to upgrade the inhabitants of New Earth, which was in the process of rebuilding after the opening of the Motorway four years before. (COMIC: In-Flight Entertainment)