Tools工具
Sun Obstruction Calculator山体遮挡时刻计算器
Mountains steal your sunrise. Enter the height of the obstacle and see exactly when the sun clears it — and where to look.山体会偷走你的日出。输入遮挡物的高度角，即可看到太阳真正越过它的时刻——以及该看向哪个方向。
- Set your shooting location, then estimate the obstacle's height angle: point your phone's camera level, then up to the ridge — the app-like method is described in our mountain obstruction guide.设置拍摄地点，然后估算遮挡物的高度角：将手机相机平放对准山脊上缘——具体方法见我们的山体遮挡指南。
- Enter the angle in degrees (15–20 is a typical mountain ridge at a few km).以度为单位输入角度（数公里外的典型山脊约为 15–20°）。
- The tool returns the real "visible" sunrise and sunset — the minutes the sun actually appears above the obstacle — plus the compass direction to look.工具会返回真正的“可见”日出与日落——太阳实际出现在遮挡物上方的分钟——以及应看向的罗盘方向。
Rule of thumb: every 10° of ridge adds roughly 40 minutes of delay at mid-latitudes. A 25° ridge can turn a 6:40 sunrise into 7:30 — and the color arrives even later, because the warmest light needs the sun even higher.经验法则：中纬度地区每 10° 山脊大约推迟 40 分钟。25° 的山脊会把 6:40 的日出变成 7:30——而最暖的色彩出现得更晚，因为它需要太阳升得更高。
