The sun going down in Death Stranding means the BTs become more active, the timefall becomes more dangerous, the terrain that was navigable in daylight becomes something else. Sam's urgency is practical. But the epigram carries something beyond the practical — the older understanding of home as the place you need to reach before dark, the safety of enclosure, the specific comfort of being inside when the world outside is doing what it does at night.

Home in DS2 is the DHV Magellan, the ship, the moving base that Tomorrow and Fragile and the others inhabit. It is not fixed. It moves with the mission. But it is still home in the sense that matters — the place where the people you would cross the world for are waiting.