For those still confused 平成30年 is the 30th year of the Heisei era or 2018, 1月 is the first month January and 27日 is the 27th day.
So to clear up any confusion, redeeming starts Jan 27, 2018- Feb 4, 2018 and raffle takes place on Feb 5, 2018
P.S. ~Choko love~