Propagation
Current gray-line

Current Gray-Line Position on Earth

The current gray-line on a world topographical map

Gray-line Importance to Propagation Special ionospheric propagation conditions often exist between two or more stations simultaneously located on the gray-line transition between daylight and darkness. The current gray-line position is depicted on this topographical world map. (Allow a few seconds for current-position calculations, image creation, and image loading.)

Current Gray-Line Position
Gray-line position at the time this image loaded

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