Formation of ten bright lights over Palm Springs

Ten lights were moving in a southeasterly direction in what appeared to be a formation. Lights were spaced evenly apart at approximately one to two degrees separation. Their speed seemed to be constant, they were not accelerating. The lights were bright white, there were no colored lights visible and no sound at all. The lights were not moving in the direction of Palm Springs airport and disappeared to the southeast about 2 minutes after the initial siting. I did not have my camera with me to take pictures.