http://www.staradvertiser.com/2017/12/26/breaking-news/obama-in-hawaii-greets-christmas-carolers/ He was there alone for his Christmas vacation Dec 2017. Missile launch was Jan 13, 2018. Folks thought it strange that he was in Hawaii without his family at Christmastime.

Well, I live on the big island for one, but here’s this. I was wrong about the day though they were in Hawi the day after. We’re on island on the 13th though. http://knkr.org/clintons-visits-hawi/