Пролетно равноденствие Spring Equinox 2019 с Google Doodle! Spring Equinox 2019 (Northern Hemisphere)

Spring Equinox 2019 (Northern Hemisphere) Google Doodle Fall Equinox .Spring Equinox 2019 Google Doodle! Честита първа пролет от Гугъл 20 март 2019 г. Spring Equinox 2019 is reminded by a Google Doodle in Northern Hemisphere. Many countries in Northern Hemisphere celebrate Spring 2019 today. An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun. This occurs twice each year: around 20 March and 23 September. In other words, it is the moment at which the center of the visible Sun is directly above the Equator. In the northern hemisphere, the equinox in March is called the Vernal or Spring Equinox; the September equinox is called the Autumnal or Fall Equinox. However, because the Moon (and to a lesser extent the other planets) causes the motion of the Earth to vary from a perfect ellipse, the equinox is now officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the longitude of the Sun is 0° and 180°. There are tiny (up to 1¼ arcsecond) variations in the Sun's latitude (discussed below), which means the Sun's center is rarely precisely over the equator under the official definition. The two understandings of the equinox can lead to discrepancies of up to 69 seconds. On the day of an equinox, daytime and nighttime are of approximately equal duration all over the planet. They are not exactly equal, however, due to the angular size of the Sun, atmospheric refraction, and the rapidly changing duration of the length of day that occurs at most latitudes around the equinoxes. The word is derived from the Latin aequinoctium, from aequus (equal) and nox (genitive noctis) (night). Also shown: Spring Equinox , વસંત સંપાદ, היום הראשון של האביב, ಸ್ಪ್ರಿಂಗ್ ಈಕ್ವಿನಾಕ್ಸ್, 春分, Գարնանային գիշերահավասար, Cónocht an Earraigh, Udaberriko ekinokzioa, Kevadine pööripäev, Equinoccio de primavera, Spring Equinox, ਬਸੰਤ ਰੁੱਤ, Vorjafndægur, வசந்த கால சம இரவு நாள், Вясенняе раўнадзенства, বসন্তের বিষুব, Proljetna ravnodnevnica, Echinocțiul de primăvară, Equinócio da Primavera, വസന്തകാല വിഷുവ ദിനം, الاعتدال الربيعي, Ekuinoks Musim Bunga, विषुव दिन, స్ప్రింగ్ ఈక్వినాక్స్, ସ୍ପ୍ରିଙ୍ଗ୍‍ ଇକ୍ୱିନୋକ୍ସ

Дата на публикация: 19 март, 2019
Категория: Пътуване и събития
Ключови думи: Google Fall spring Doodle equinox 2019 (Northern Hemisphere)

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