North Korea’s primary space launch center appeared mostly quiet on Tuesday, high-resolution satellite imagery shows, indicating work has not begun on a major overhaul ordered by Kim Jong Un earlier this month despite media reports of new construction.

Pyongyang has so far not provided any indications of a potential launch date after recently announcing it would put “military reconnaissance satellites” into orbit in the near future. But state media has signaled there will be massive celebrations for the April 15 holiday celebrating the 110th birthday of founding leader Kim Il Sung, and there are signs of an