Diagonal Lights in formation, perfect line-up,

A set of four rather faint light-clusters (each light very clear like a pin-prick), each cluster appearing cross-like, rather yellow-orange in color (not typical airplane bright white or red/green), flying in perfect diagonal-line formation (very close together), at about 30 degrees orientation to line of travel -- going much faster across the sky than any airplane, faster than Int'l space station. Direction approx from NNW to SSE. Height not discernable.