represents the night half of the Earth for the specified date.
- datespec can be a DateObject or a string that resolves to a date.
- A date without explicit time zone is assumed to use $TimeZone.
Examplesopen allclose all
Basic Examples (2)
Shade the part of the Earth currently at nighttime:
Show the unilluminated part of the Earth on the summer solstice, using red lines to denote the Arctic and Antarctic Circles:
Use a different projection:
NightHemisphere gives a plot for the current date and time:
Using Now explicitly gives the same result:
Illustrate changes in the unilluminated hemisphere at different times of day and year:
Specify dates in other formats:
Properties & Relations (2)
The terminator line separates the day and night hemispheres:
For a spherical model of the Earth, the night hemisphere is a geo disk:
The true night hemisphere and approximate darkness geo disk differ slightly when using an ellipsoidal model of the Earth:
Introduced in 2014