Extract and open START-HERE.html. All Sun-model controls, 365 calculated dates, diagrams and exports are included. Interactive controls need JavaScript. Wider guide pages, source websites and updates need internet. The date range is 2026 only. Local apparent solar time is not Egypt civil time. Selected-day CSV/SVG exports reflect the chosen date and facing; the included default files use 21 June and south-facing. Approximate NOAA fractional-year declination, clear level horizon, no clouds, building/terrain shade, actual home orientation, indoor heat, radiation intensity, bills or financial returns. Source/date and geographic reference remain in the reader. Original Ras El Hekma Guide software and diagrams. No private chat, contacts, offers, tokens or unlisted room included.