Object moves from west to east, makes a u-turn, and goes back west. Glows orange. Repeat of 12-24 event.Object move from west to east at a speed of approximately 200mph (when compared to a jet flying) The approximate altitude was 20,000 to 25,000 feet. This is a REPEAT of the same object we saw one week earlier on Dec 24th, from the same location.Object came over the mountains west of Monterrey, flew east for approximately 3 minutes, then made a "u" turn and went back west and out of sight.The color was an orange glow with no flashing lights. Obviously, the conclusion that 99% of the people will reach when they read this report is that is was "fireworks" for the new year. But this is a repeat occurrance and the number of individuals watching this event were all sure this was not fireworks or a jet aircraft.