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Mapping software which links a Garmin GPS receiver to your Macintosh. Includes Maidenhead grid squares and beam-pointing maps.

GridLocW is a free Lat/Long to Maidenhead converter for Windows - with optional GPS support, includes the formula to calculate geodesic distance (in m) between two points specified by latitude/longitude.

The short-term aurora forecast, based on the OVATION model, predicts aurora location and intensity 30 to 90 minutes ahead, aligning with solar wind travel time. Maps show aurora ovals in green, turning red for higher intensity. Aurora, visible after sunset or before sunrise, impacts technologies like radio communication, GPS, and power grids. It's a mesmerizing space weather spectacle, drawing travelers to the Arctic.