In most parts of the world, we define the seasons in two ways. By the Astronomical or Meteorological dates. Astronomical seasons refer to the position of Earth’s orbit in relation to the sun taking into account equinoxes and solstices. Meteorological seasons are instead based on the annual temperature cycle and measure the meteorological state as well as coinciding with the calendar to determine a clear transition between the seasons. ~ MetOffice-UK
The Solstices and Equinoxes are considered to be the astronomical transition points between the seasons. Because they are connected to the Sun and Moon, they were important times to early Pagans.
Of course in the old days, our ancestors didn’t have the benefit of the Naval or Royal Observatories and Satellites to mark the exact second of the Equinox. They relied on Astronomical monuments, like Stonehenge as an example to tell them when the sun was nearing an equinox.
We have the benefit of technology and hundreds of years of study to help us out today.
The March equinox happens at the same moment across the world but is converted to local time. In 2015, it falls on March 20 at 6:45 P.M. EDT, 5:45 P.M. CDT, 4:45 P.M. MDT, and 3:45 P.M. PDT, for example. ~ Farmer’s Almanac Continue reading