Spring equinox

“ However, the spring equinox is always the sixth "joint," and is the middle of spring season: this and the other "joints" being all about 151/4 days in length, the Chinese seasons can be symmetrically divided with relation to both equinoxes and both solstices; for the intercalary moon (judiciously made unobtrusive, and kept out of vulgar sight as far as possible) settles the lunar year difficulty; and the seasons conform, as of course they should do, to the heat of the sun, which is a much more natural and practical arrangement than our own arbitrarily assorted and unequal months. ”

“ Among all early peoples the most important times of the year must necessarily have been those connected with seed-time and harvest in each locality. Now the spring equinox and summer solstice south of the equator are represented by the autumnal equinox and the winter solstice to the north of it. If the colonists who came to Eridu came from a region south of the equator, they would naturally have brought not only their southern stars, but their southern seasons with them ”

“ There are two equinoxes, but men pay more honour to the equinox in the sign of Capricorn than to that in the sign of Cancer.862 Surely the reason for this is evident. Since the sun begins to approach us immediately after the spring equinox,—for I need not say that then the days begin to lengthen,—this seemed the more agreeable season. For apart from the explanation which says that light accompanies the gods, we must believe that the uplifting rays863 of the sun are nearly akin to those who yearn to be set free from generation. ”

“ The signs—the Greek δωδεκατημόρια—are geometrical divisions thirty degrees in extent, counted from the spring equinox in the direction of the sun’s progress through them. The whole series accordingly shifts westward through the effect of precession by about one degree in seventy two years. At the moment of crossing the equator towards the north the sun is said to be at the first point of Aries; some thirty days later it enters Taurus, and so on through Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius and Pisces. ”

“ Some creatures can make provision against change without stirring from their ordinary haunts; others migrate, quitting Pontus and the cold countries after the autumnal equinox to avoid the approaching winter, and after the spring equinox migrating from warm lands to cool lands to avoid the coming heat. ”

“ It coincided with the line of the equinoxes 4000 or 4089 years before the Christian era, much about the time chronologists assign for the creation of man. In 6485 the major axis will again coincide with the line of the equinoxes, but then the solar perigee will coincide with the equinox of spring; whereas at the creation of man it coincided with the autumnal equinox. In the year 1250 the major axis was perpendicular to the line of the equinoxes, and then the solar perigee coincided with the solstice of winter, and the apogee with the solstice of summer. ”

“ In July and August they renew their worn plumage and become extremely fat, and then when the September equinox warns them that the best of the summer is past, they go southwards to the shores of the Mediterranean and to Africa, there to pass the winter till returning spring once more prompts them to risk the perils of the journey and to revisit their summer home. ”

“ To a resident on the equator the night is no doubt equal to the day at all times in the year, but to one who lives on any other part of the earth, in either hemisphere, the night and the day are not generally equal. There is, however, one occasion in spring, and another in autumn, on which the day and the night are each twelve hours at all places on the earth. When the night and day are equal in spring, the point which the sun occupies on the heavens is termed the vernal equinox. ”

“ On the mithraitic monuments the spring equinox is represented by lighted and elevated torches, trees covered with leaves, entire bulls, and young men holding lighted torches; while the autumnal equinox is represented by a hydra, or long serpent, a scorpion, reversed and extinguished torches, trees loaded with autumn fruits, a bull with its generative organs torn away, and old men holding reversed and extinguished torches. ”

“ But each season is to be begun in such way that the equinox divides the season of spring from its first day; and the season of summer is divided by the eighth day before the Kalends of July, and that of autumn by the eighth before the Kalends of October, and that of winter by the eighth before the Kalends of January in like manner. ”

“ For this reason, although there is no natural beginning of the zodiac, since it is a circle, they assume that the sign which begins with the vernal equinox, that of Aries, is the startingpoint of them all, making the excessive moisture of the spring the first part of the zodiac as though it were a living creature, and taking next in order the remaining seasons, because in all creatures the earliest ages, like the spring, have a larger share of moisture and are tender and still delicate.
The second age, up to the prime of life, exceeds in heat, like summer ”

“ We have daily a powerful sedative effect in the morning, a powerful meridian reaction, which again subsides into a sedative condition on the access of the evening. This daily effect on the constitution is exactly similar to that at the autumnal equinox, only it occurs under different circumstances. In autumn it is connected with departing heat and progressively increasing cold; in Spring it is connected with progressively diminishing cold and advancing heat. After the vernal equinox, the difference in the meridian and midnight temperature gradually diminishes ”

“ The seasonal variations in the movements of the heavenly bodies, along with the recurring seasons themselves, are also determined by the prevalent winds, which, acting as the motive power upon the various zones, form a celestial parallelogram of forces. In this way is ingeniously explained also why in spring the days lengthen and in autumn they shorten until in either case an equinox is reached (Fig. 2) .
‘I looked and behold the east and the south wind with their collaterals, moving the firmament by the power of their breath, caused it to revolve over the earth from east to west ”

“ But it is clear that as the full moon is opposite the sun, and as to fulfil the condition described we have seen that she must be crossing the equator from south to north, the sun, opposite to her, must be at the part of his path where he crosses the equator from north to south. In other words, the time of year must be the autumnal equinox. ”

“ These are called tropical, because the Sun, after he has arrived at their first points, seems to turn, and to change his course towards a contrary latitude; [43] causing summer by the turn he makes in Cancer, and winter by that which he makes in Capricorn.
There are also two equinoctial signs: Aries, the first after the vernal equinox; and Libra, the first after the autumnal equinox: they are so called, because the Sun, when in the first point of either, makes the day and night equal. ”

“ Now, let us suppose that, at a time when the ellipticity is great, the movement known as the precession of the equinox has changed the incidence of our seasons, so that our summer happens in perihelion and not in aphelion, while that of the southern hemisphere occurs in aphelion, and not, as at present, in perihelion. Under such conditions, the climate of the globe would experience a complete change. ”

“ When at their equinoxes the other planets undergo a like experience, and indirectly, through the sun, we share in the resultant electrical excitement. Such is the theory, and on such foundations does it rest. Historical records and the reports of the weather bureaus furnish endless confirmations, for every storm finds an equinox to bear the responsibility. In order to include all actual phenomena, the duration of an equinoctial period is put at one-fourth the planet's year, so that each planet spends halt its time in creating disturbances throughout the solar system. ”

“ E × (Z- 1⁄2 sin. 2 Z) , will consequently be the total regress of the point E, in the time that the sun, by his apparent motion, describes the arch HE or Z; which, on the sun's arrival at the solstice, becomes barely = 1⁄2k × T/t × co-s. E × an arch of 90°∶ the quadruple whereof, or 1⁄2k × T/t × co-s. E × 360° (= 3t/4T × OA2-OP2/OA2 × co-s. E × 360°) is therefore the whole annual precession of the equinox caused by the sun. This, in numbers (taking OP/OA = 229/230 ) comes out 3/4 × 3661⁄4 × 2/2301⁄2 × 0.917176 × 360° = 21 ́ ́ 6 ́ ́ ́. ”

“ Thus, when the equinoxes are in the horizon, the ecliptic makes a very small angle with the horizon; whereas, when the solstitial points are in the horizon, the same angle is far greater. In the former case, a body moving eastward in the ecliptic, and being at the eastern horizon at sunset, would descend but a little way below the horizon in moving over many degrees of the ecliptic. Now, this is just the case of the moon at the time of the harvest home, about the time of the Autumnal equinox. The sun being then in Libra, and the moon, when full, being of course opposite to the sun, or in Aries ”

“ Where these two planes cut each other we have the equinoxes, because the intersection of the planes defines for us the vernal and the autumnal equinoxes; when the sun is highest and lowest half-way between these points we have the solstices. In a period of 25,000 years the star which is nearest to an equinox will return to it, and that which is nearest a solstice will return to it. ”

“ If the vernal equinox, the season at which in the temperate regions the whole face of nature testifies to a fresh outburst of vital energy, had been viewed from of old as the time when the world was annually created afresh in the resurrection of a god, nothing could be more natural than to place the resurrection of the new deity at the same cardinal point of the year. ”