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Solstice and equinox animation9/5/2023 ![]() ![]() Blue Sky Angle Pattern, snowflake, texture, blue, winter png 500x815px 220.33KB.assorted-color tree lot illustration, The Four Seasons Tree Spring Winter, Variety of seasons abstract tree material, leaf, text, tree Branch png 460x1139px 1.04MB.Birthday Summer Desktop House, scenery, television, wish, holidays png 1137x758px 1.41MB.Southern Hemisphere Northern Hemisphere First Point of Aries Equinox Celestial equator, Constelacion, angle, text, atmosphere png 1920x1195px 134.95KB.Southern Hemisphere Star chart Astronomy Night sky Constellation, constellation lines, angle, white, map png 1013x967px 108.18KB.September Equinox March Equinox, autumn, winter, computer, winter Solstice png 695x800px 248.68KB.Southern Hemisphere Northern Hemisphere Autumn Equinox Solstice March Equinox, autumn equinox, globe, sphere, world png 670x528px 41.42KB.March Equinox September Equinox, Sun Line Art, winter Solstice, spring, sun Line Art png 600圆00px 194.64KB.March Equinox Solstice Earth September Equinox, winter solstice, winter, globe, world png 1340x853px 645.51KB.Follow Astro Navigation Demystified on WordPress.Stars For All Seasons Part 7 – Spring Stars in the Northern Hemisphere.The Importance Of Morning And Evening Star Sights.The Importance of Morning and Evening Star Sights – Part 2.The Purpose of Altitude and Azimuth Angle in Position Finding at Sea.The Retrograde and Prograde Motions of Mars and Jupiter.The Winter Solstice usually falls on 21 December but sometimes falls on 22 December.Īstro Navigation Demystified is available from and Amazon.uk Similarly, the Summer Solstice usually falls on 21 June but sometimes falls on 20 June. The Autumnal Equinox sometimes falls on 22 September and sometimes on 23 September. So, the Vernal Equinox sometimes falls on 20 March and sometimes on 21 March. However for the sake of convenience, the Gregorian calendar divides three years of the cycle into 365 days and the fourth (the leap year) into 366. The dates of the equinoxes and the solstices will vary slightly during the four-year cycle between leap years for the following reason: Each year is approximately 365.25 days in length. The latitude of the tropic of Cancer is currently drifting south at approximately 0.5’’ per year while the latitude of the tropic of Capricorn is drifting north at the same rate. The Winter Solstice (mid-winter in the northern hemisphere) occurs on about 21 December when the Sun’s declination is 23. The Summer Solstice (mid-summer in the northern hemisphere) occurs on about 21 June when the Sun’s declination reaches 23. This is because the apparent movement of the Sun seems to stop before it changes direction The word solstice is taken from ‘solstitium’, the latin for ‘sun stands still’. The times when the Sun reaches the limits of its path of declination are known as the solstices. ![]() The Vernal Equinox occurs on about the 21 March when the Sun crosses the celestial equator as it moves northwards from 23.5 o South, the southernmost limit of its declination. 5 o North, the northernmost limit of its declination. The Autumnal Equinox occurs on about the 22 September when the Sun crosses the celestial equator as it moves southwards from 23. Because the Sun is on the celestial equator at the equinoxes, its declination is of course 0 o. 12 hours) hence the term equinoxes (equal nights). At the equinoxes, at all places on Earth, the nights and days are of equal duration (i.e. The Sun crosses the celestial equator on two occasions during the course of a year and these occasions are known as the equinoxes. Declination can be summarized as the celestial equivalent of Latitude since it is the angular distance of a celestial body North or South of the Celestial Equator. 5 o South and back again during the course of a year. The declination of the Sun changes from 23.5 o North to 23. The Declination of a celestial body is its angular distance North or South of the Celestial Equator. ![]()
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