Laying in the sun in the back yard, approx 5:50pm central time 8/11/2020. i was blocking the sun from my eyes with my hands and i noticed the object at approx 30 degrees above western horizon moving steadily west to east at high altitude. object was visible for 20-25 seconds from entering to exiting field of view. object appeared to be tumbling/rotating forward end over end at rate of approx 1 second per rotation. object appeared to be cylindrical in shape. no other objects seen in the area.