The Spring, or March, Vernal Equinox is the moment the sun crosses the celestial equator
-- the imaginary line in the sky above the Earth's equator -- from south to north.
A stunning piece of art front and back, this incredible piece displays hours, minutes, perpetual calendar, day/night indication, precision moonphase, age of the moon, running equation of time, sunrise and sunset, length of day and night, seasons, solstices, equinoxes and zodiacal signs, tide level indicator, Sun-Earth-Moon conjunction, opposition and quadrature, transparent celestial chart of the Northern Hemisphere with indication of the Milky Way, the ecliptic and the celestial equator
, celestial time hours and minutes, tourbillon, 3-week power reserve (using 6 barrels), and power reserve indication.
After the autumnal equinox, Pagasa said 'Philippine nights will be longer as the sun moves below the celestial equator
toward the southern hemisphere.
In the northern hemisphere, the Sun crosses the celestial equator
But at sunset on March 19th, I observed the last bright spark of sunlight precisely in my "Road Henge" notch --just four hours before the Sun crossed the celestial equator
declination The angular distance above (positive) or below (negative) the celestial equator
Thereafter, Philippine nights will be longer as the sun moves below the celestial equator
towards the southern hemisphere.
Earth's axis is inclined at approximately 23 degrees to the Sun's celestial equator
changing the altitude of the Sun during the year.
By the time of dichotomy in late October the planet's declination will be well south of the celestial equator
It is also the one constellation that is viewable all over the world, as it lies on the celestial equator
As the sun crosses the celestial equator
, the axis of the Earth points neither toward nor away from the sun, resulting in 12 hours of light and 12 hours of darkness.
Monoceros: This is a faint constellation on the celestial equator