Meantime, [I have been invited by Oxford University to receive an honorary degree on the 26th of June, and shall sail on that quest on the 8th]. I have made no effort to conceal the fact that I am vain of this distinction. Sometimes they catch an illustrious American who has wandered to the English shores on his own affairs, and Oxford transfigures him with a degree, but [I am one of the very few that have been] sent for from over the ocean.

"18 May 1907: Paragraph 4," in Autobiography of Mark Twain, Volume 3. 2015 

June 8, 1907: Sam departed for England, arrived June 18.

June 26 Wednesday – The big day in Oxford, England: The Encoeonia (conferring of degrees) took place at the Sheldonian Theater in the morning.

July 13, 1907:  Sam departs England.  Arrived in New York July 22nd.