It’s here. Well, almost here. The first day of spring. The day we gardeners dream about.
If you live on the west coast of North America like I do, spring officially arrives at 4:02 am. When I worked full-time, I used to try to take the first few days of spring off so I could start a garden. This year, I’ve rearranged my schedule to attend the San Francisco Flower and Garden Show. I am so excited.
The show opens tomorrow, March 20th and runs through Sunday. It’s exciting to be among the first to arrive when everything is still fresh. This year’s theme is Gardens Make the World Go Around. Frankly, I couldn’t agree more!
I’ll be taking photos galore to share with you later in the week. And…guess what? It’s raining! (Shhhhhh….we don’t want it to stop).
Ah, spring, how I love you so.
What is a Vernal Equinox?
An equinox occurs twice a year (around 20 March and 22 September), when the tilt of the Earth’s axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth’s equator. The term equinox can also be used in a broader sense, meaning the date when such a passage happens. The name “equinox” is derived from the Latin aequus (equal) and nox (night), because around the equinox, night and day are about equal length.
At an equinox the Sun is at one of two opposite points on the celestial sphere where the celestial equator (i.e. declination 0) and ecliptic intersect. These points of intersection are called equinoctial points: classically, the vernal point (RA = 00h 00m 00s and longitude = 0º) and the autumnal point (RA = 12h 00m 00s and longitude = 180º). By extension, the term equinox may denote an equinoctial point.
The equinoxes are the only times when the sub-solar point is on the Equator. The sub-solar point (the place on the Earth’s surface where the center of the Sun is exactly overhead) crosses the Equator moving northward at the March equinox and moving southward at the September equinox. (Since the sun’s ecliptic latitude isn’t exactly zero it isn’t exactly above the equator at the moment of the equinox, but the two events usually occur less than 30 seconds apart.) – Read more at Wikipedia