Before the Japanese Monetary Policy Statement was released the charts showed a perfectly clear pattern that indicated Yen pairs were about to drop. So clear and certain many of us entered before the news and are now in profit. I guess the U.S. government shutdown being over may have had something to do with it. also.
https://www.cnbc.com/2018/01/22/asia-markets-bank-of-japan-currencies-in-focus.html