Day/Night Shading
Contents
As the Earth revolves around the sun, half of the Earth is in shadow. This region of shadow can be shown in Solar Maps, provided that you are viewing a map of the entire world in either Cartesian or Mercator projection.
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To switch the day/night shading on or off |
Select the “Day/Night Shading“ item from the “Chart“ menu.
This will switch the shading on if it is currently off, or switch it off if it is currently on.
The shaded region is bounded by the rising/setting lines of the Sun. This can be clearly seen if you choose to view only the Sun as a displayed point.
If this option is used in conjunction with the AstroClock, then you can easily track the progress of the shadow as it moves westwards around the Earth. This may also be useful if you want to make a phone call overseas, in which case you can easily see what stage of the day/night cycle your intended recipient is experiencing!