That is the same time I ride and for just about the same amount of time to. I run a 200 lum headlight and a 40 lum rear flasher. I havent had any problem with people seeing me. I work 2am - 11am a few days a week so I guess you could say I ride at night 50 percent of the time and in the day the other 50 percent of the time. Your not alone.