tl;dr: Sun Clock is a free, ad-free 24-hour web clock that visualizes the sun's position, sunrise/sunset, solar noon, golden hour, twilight, and moon phase/position for your current location. It rotates direction based on hemisphere (clockwise in the North, counter-clockwise in the South) to match the sun's actual movement, and works as an installable Progressive Web App with offline support. Location data stays local in the browser, and the source is MIT-licensed.