Best time greyline path between two locations


Grid locator 1 (AA99XX)
Grid locator 2 (AA99XX)
or choose a country below
Geographic coordinate take from cty.dat
More elevation (6° default is 1°) *
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* the Twilight is calculated by default with a sun elevation angle of 1° over or below the horizon.
If the box is checked the calculations are made with a sun elevation angle of 6° over or below the horizon.
See here for more informations.