Spring officially arrived today right on time. In real time it is March 20, which is the vernal equinox. Below I have shared info from Wikipedia about the Equinox. You can also hit Google Search Button to discover more in this category. (The Google Search is also decorated in a cute growing Spring Doodle!) Your photostudy is of the new blooms around the grounds. Last night, the frogs began singing on the creek. It is amazing every year how new life springs forth everywhere with no "Permission" from Man!
- Vernal equinox and autumnal equinox: these classical names are direct derivatives of Latin (ver = spring and autumnus =autumn). These names are based on the seasons, and can be ambiguous since seasons of the northern hemisphere andsouthern hemisphere are opposites, and the vernal equinox of one hemisphere is the autumnal equinox of the other.
- Spring equinox and fall equinox or autumn equinox: these are more colloquial names based on the seasons, and are also therefore ambiguous across hemispheres.
- March equinox and September equinox: names referring to the times of the year when such equinoxes occur. These are without the ambiguity as to which hemisphere is the context, but are still not universal as not all people use a solar-based calendar where the equinoxes occur every year in the same month (as they do not in the Islamic calendar and Hebrew calendar, for example), and the names are not useful for other planets (Mars, for example), even though these planets do have seasons.
- Northward equinox and southward equinox: names referring to the apparent motion of the Sun at the times of the equinox. The least culturally biased terms.
- Vernal point and autumnal point are the points on the celestial sphere where the Sun is located on the vernal equinox andautumnal equinox respectively. Usually this terminology is fixed for the Northern hemisphere.
- First point (or cusp) of Aries and first point of Libra are names formerly used by astronomers and now used by navigators and astrologers. Navigational ephemeris tables record the geographic position of the First Point of Aries as the reference for position of navigational stars. Due to the precession of the equinoxes, the astrological signs of the tropical zodiac where these equinoxes are located no longer correspond with the actual constellations once ascribed to them. The equinoxes are currently in the constellations of Pisces and Virgo. In sidereal astrology (notably Hindu astrology), by contrast, the first point of Aries remains aligned with Ras Hammel "the head of the ram", i.e. the Aries constellation.
Length of equinoctial day and night
...this is brendasue signing off from Rainbow Creek. See You next time!!