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The distinction is not absolute, because crepuscular animals may also be active on a bright moonlit night or on a dull day. Some animals casually described as nocturnal are in fact crepuscular. [2] Special classes of crepuscular behaviour include matutinal, or "matinal", animals active only in the dawn, and vespertine, only in the dusk.
The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [4] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the Sun's disc goes 6° below the horizon in the ...
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Birds flying before dawn over the Maasai Mara Matutinal activity occurs in the twilight period from dawn to sunrise. Matutinal, matinal (in entomological writings), [1] [2] and matutine are terms used in the life sciences to indicate something of, relating to, or occurring in the early morning.
A bat flying at dusk. Vespertine is a term used in the life sciences to indicate something of, relating to, or occurring in the evening. In botany, a vespertine flower is one that opens or blooms in the evening. [1] In zoology, the term is used for a creature that becomes active at dusk, such as bats and owls. Strictly speaking, however, the ...
This is a list of flying mythological creatures.This listing includes flying and weather-affecting creatures. Adzehate creatures; Angel; Arkan Sonney; Basilisk; Boobrie; Cockatrice
There’s also a “celestial, otherworldly” quality to future dusk, which Samba said is influenced by “the second space age” and rise of “synthetic creativity,” like AI-generated art.
Twilight occurs according to the solar elevation angle θ s, which is the position of the geometric center of the Sun relative to the horizon. There are three established and widely accepted subcategories of twilight: civil twilight (nearest the horizon), nautical twilight, and astronomical twilight (farthest from the horizon).