Write a question about the following article: On August 4, at the recommendation of the Nicaraguan president, a landing force of 100 bluejackets was dispatched from Annapolis to the capital, Managua, to protect American citizens and guard the U.S. legation during the insurgency. On the east coast of Nicaragua, the North Atlantic Fleet protected cruiser USS Tacoma  was ordered to Bluefields, Nicaragua, where she arrived on August 6 and landed a force of 50 men to protect American lives and property. A force of 350 U.S. Marines shipped north on the collier USS Justin from the Canal Zone and disembarked at Managua to reinforce the legation guard on August 15, 1912. Under this backdrop, Denver and seven other ships from the Pacific Fleet arrived at Corinto, Nicaragua, from late August to September 1912, under the command of Rear Admiral W.H.H. Southerland. USS Denver, commanded by Commander Thomas Washington arrived at Corinto on August 27, 1912, with 350 navy bluejackets and Marines on board. Admiral Southerland's priorities were to re-establish and safeguard the disrupted railway and cable lines between the principal port of Corinto and Managua, 70 miles to the southeast.

Question about the article:
In which date Thomas arrived?