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Three Phases of Twilight

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Based on real life. And since I'm an astronomy and geography geek, I decided to post something like this.

Only Luna is darker than these Twilights. :XD:

Astronomical Twilight - the darkest one. Occurs when the Sun is between 12 degrees and 18 degrees below the horizon.

Nautical Twilight - kinda brighter. Occurs when the geometrical center of the Sun is between 6 degrees and 12 degrees below the horizon. This twilight period is less bright than civil twilight and artificial light is generally required for outdoor activities.

Civil Twilight - our Twilight we know and love. :) Occurs when the Sun is less than 6 degrees below the horizon.


Civil Twilight vector :icon1apeepa: The rest was edited by me.



MLP:FiM and all characters belongs to :iconhasbroplz: & :iconfyre-flye:
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