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In its apparent motion on the day of an equinox, the Sun's disk crosses the Earth's horizon directly to the east at sunrise; and again, some 12 hours later, directly to the west at sunset. The March equinox, like all equinoxes, is characterized by having an almost exactly equal amount of daylight and night across most latitudes on Earth. [14]
The equinox occurs at 5:24 p.m. EDT Monday, March 20, the latest start to astronomical spring since 2019. This differs from meteorological spring, which beings on March 1 every year.
Given the different Sun incidence in different positions in the orbit, it is necessary to define a standard point of the orbit of the planet, to define the planet position in the orbit at each moment of the year w.r.t such point; this point is called with several names: vernal equinox, spring equinox, March equinox, all equivalent, and named considering northern hemisphere seasons.
It is only after a complete Gregorian leap-year cycle of 400 years that the seasons commence at approximately the same time. In the 21st century the earliest March equinox will be 19 March 2096, while the latest was 21 March 2003. The earliest September equinox will be 21 September 2096 while the latest was 23 September 2003 (Universal Time).
In 2024, the spring equinox happens on March 19 at 11:06 p.m. EDT. But while the vernal equinox takes place the evening of March 19 in the United States, it will already be March 20 for most of ...
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March is the third month of the year in both the Julian and Gregorian calendars. Its length is 31 days. Its length is 31 days. In the Northern Hemisphere , the meteorological beginning of spring occurs on the first day of March.
In 2024, the March equinox will occur on Tuesday, March 19, at 11:06 P.M. EST. If you happen to reside in the Northern Hemisphere, this date will also mark the start of the spring season. But if ...