Question: When was the company that Hutchinson Travel is a member of formed?

Related documents: [0]  [DOC] hutchgo.com is an online travel agency offers one-stop booking services in the Asia Pacific region, providing travel related products including air tickets, multi-city flights, accommodation ranging from hotel, lodge to resort, tour & holiday packages, travel insurance and car rental. The online travel site is owned by Hutchison Travel (formerly known as Hutchison-Priceline), a member of CK Hutchison Holdings. [END] 
[1]  [DOC] CK Hutchison Holdings Limited is a Cayman Islands–registered conglomerate headquartered in Hong Kong. The company was formed in March 2015 through the merger of Cheung Kong Holdings and its main associate company Hutchison Whampoa. [END]  
Answer: March 2015
March 2015