File:Equirectangular-projection+terminator.jpg

Summary

Description
English: Earth Equirectangular-projection + terminator (around 6 pm UTC near the december solstice)
Français : Terminateur sur une projection cylindrique équidistante de la Terre aux environs de 18h UTC vers le solstice de décembre
Date
Source Own work derivated from File:Equirectangular-projection.jpg
Author Xofc (derivated from a work by user:Mdf who used a NASA image)

The terminator has been ploted with gnuplot

set angles degrees
set yrange [-90:90]
set xrange [-180:180]
set terminal png enhanced size 2048,1024
set output 'core.png'
f(x)=atan(tan(90-23.4)*cos(x+90))
plot f(x)

resized, and used as selection calc for luminosity+contrast enhancement with GIMP. (See fr:WP:Oracle/semaine en cours#Géométrie)

Licensing

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Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

Category:CC-Zero#Equirectangular-projection+terminator.jpgCategory:Self-published work
Category:Terminator Category:Daylight time maps Category:Time 18:00 to 18:59 Category:December Category:December solstices Category:21st-century maps of the world Category:Blue Marble 2002 images Category:Maps of the world with equirectangular projection Category:Global maps centered Greenwich Category:Language-neutral maps Category:Images with Gnuplot source code
Category:21st-century maps of the world Category:Blue Marble 2002 images Category:CC-Zero Category:Daylight time maps Category:December Category:December solstices Category:Global maps centered Greenwich Category:Images with Gnuplot source code Category:Language-neutral maps Category:Maps of the world with equirectangular projection Category:Self-published work Category:Terminator Category:Time 18:00 to 18:59