This is not really an Idea, just something interesting to post.
The time span is from January 16, 2023 to Feb 8, 2023 (about 3 weeks)
Purple is from Midnight to 4:AM Green is Pre-market Hours 4:AM to 9:30AM - Market Open Blue is Regular Trading Session - 9:30 to 4:PM Market Close. Red is After Hours 4:PM to 8:PM. White/Grey is After all trading from 8:pm to Midnight.
I starting color coding the hours to see what trading times seem to have the most movement but it appears as the DXY action can happen at anytime day or night. Sometimes you can see patterns on a daily time frame, other times not so much.