Woodridge, Illinois, Tuesday January 27 - 2015, at about 5:45pm, it was still daylight, and no other stars visible in the sky, this light was very bright (like it should not be there), the appearance was white/yellowish with no sharp edges. At the time, I was driving and when I turned facing west, it was right in front and it could not be missed. Parked on the side of the road and using my phone's compass, the position showed 250 degrees W.S.W. and an altitude which I estimated at about 30 to 35 degrees above the horizon. I was only able to be there for about a half an hour, in which the light moved closer to the horizon to an estimated 10 to 15 degrees, what it seemed to be fast, to be the effect of the earth's rotation. In that half hour the light did blink about 3 to 4 times in a weird way, and also paying a very close look there was a very small second light just above the main light, which it was difficult to know if it was part of the event or it was just a real star in its background. I last saw the light, because it eventually was blocked by trees. It really never made any sudden moves or anything drastic. The time when I last saw the light was about 6:15pm.