Question: when does harmony of the seas start sailing
Answer: 2019-12-29; 2019 12 29; 2019 December 29; 12/29/2019; 12 29 2019; 29 December 2019; 12-29-2019; 2019-12-29; 2019 December, 29; 29 12 2019; 29-12-2019; 29/12/2019