Yosemite NP – Granite & Falls — Blue/Golden/Blue Hour Relay

Build a dawn‑to‑night relay route in Yosemite National Park, USA: blue hour → golden hour → civil twilight → night. Map 8 stops with exact timing offsets (minutes from sunrise/sunset). Return as YAML with keys: stop, exact_spot, timing_offset_min, lens, composition, safety_note.