19 March 2022
Tomorrow, 20 March, the Northern Hemisphere will celebrate a happy milestone when the Spring Equinox occurs at 11:33am EDT. Astronomers can pinpoint the exact date and time because it’s the moment when the center of the visible Sun shines directly above the Equator.
This sundial in Ecuador at GPS 00.000, -78.103 shows the sun’s shadow falling on the equator during the equinox. Mark the shadow at your own home and see the sun return to this position on the Autumnal Equinox on 23 September.
In Pittsburgh we are gaining almost 3 minutes of daylight per day, in this week surrounding the equinox.
Happy Spring!
(diagram and photo from Wikimedia Commons; click on the captions to see the originals)
Happy (almost) Spring! Love the longer days and the return of more birds chirping and tweeting. Get outside and enjoy!