is a two-dimensional GeoGraphics primitive that represents the half of the Earth that is currently in daylight.
represents the daylight 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)
Color the part of the Earth currently in daylight:
Show the illuminated part of the Earth on the summer solstice using red lines to denote the Arctic and Antarctic Circles:
Use a different projection:
DayHemisphere gives a plot for the current date and time:
Using Now explicitly gives the same result:
Illustrate changes in the illuminated 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 day hemisphere is a geo disk:
The true day hemisphere and approximate daylight geo disk differ slightly when using an ellipsoidal model of the Earth:
Neat Examples (1)
Use a different map style in the day and night hemispheres:
Introduced in 2014