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25/12/2020

Beautiful view of sunset
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Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth's rotation. As viewed from the Equator, the equinox Sun sets exactly due west in both Spring and Autumn. As viewed from the middle latitudes, the local summer sun sets to the southwest for the Northern Hemisphere, and to the northwest for the Southern Hemisphere.
The time of sunset is defined in astronomy as the moment when the upper limb of the Sun disappears below the horizon. Near the horizon, atmospheric refraction causes sunlight rays to be distorted to such an extent that geometrically the solar disk is already about one diameter below the horizon when a sunset is observed.

Sunset is distinct from twilight, which is divided into three stages, the first being civil twilight, which begins once the Sun has disappeared below the horizon, and continues until it descends to 6 degrees below the horizon; the second phase is nautical twilight, between 6 and 12 degrees below the horizon; and the third is astronomical twilight, which is the period when the Sun is between 12 and 18 degrees below the horizon.Dusk is at the very end of astronomical twilight, and is the darkest moment of twilight just before night.Night occurs when the Sun reaches 18 degrees below the horizon and no longer illuminates the sky.

Locations further North than the Arctic Circle and further South than the Antarctic Circle experience no full sunset or sunrise on at least one day of the year, when the polar day or the polar night persists continuously for 24 hours.

24/12/2020

Abutilon grandifolium plant & flower with Spoladea recurvalis beet webworm moth butterfly
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Spoladea recurvalis, the beet webworm moth or Hawaiian beet webworm, is a species of moth of the family Crambidae. It is found worldwide, but mainly in the tropics.
Binomial name
Spoladea recurvalis
(Fabricius, 1775)

Synonyms

Phalaena recurvalis Fabricius, 1787

Zinckenia recurvalis

Phalaena Pyralis fascialis Stoll, in Cramer, 1782

Hymenia recurvalis

Hymenia exodias Meyrick, 1904

Hydrocampa albifacialis Boisduval, 1833

Hydrocampa albifascialis Boisduval, 1833

Hymenia diffascialis Hübner, 1825

Nacoleia ancylosema Dognin, 1909

Odezia hecate var. formosana Shiraki, 1910

Phalaena angustalis Fabricius, 1787

Phycis recurvella Zincken, 1818

Spoladea animalis Guenée, 1854

The wingspan is 22–24 mm. The moth flies from May to September depending on the location.

The larvae feed on spinach, beet, cotton, maize and soybean. They feed on the underside of the leaves protected by a slight web. The larvae are green and resemble the ribs of the leaf somewhat. When fully grown, they are about 19 mm long.

The pupa is formed within a slight cocoon in a folded piece of leaf. It is very pale brown. The pupal period lasts about 12 days.

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