When is the 1st day of spring in 2010 and at what time is the Vernal Equinox?”
An equinox occurs twice a year, when the tilt of the Earth’s axis is inclined neither away from nor towards the Sun, the Sun being vertically above a point on the 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, the night and day are approximately equally long. It may be better understood to mean that latitudes +L and -L north and south of the equator experience nights of equal length. The word is also used for the same event happening on other planets and in setting up a celestial coordinate system; see equinox (celestial coordinates). 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: the vernal point and the autumnal point. By extension, the term equinox may den
In the US and Canada Daylight Saving Time always begins on the second Sunday of March and ends on the first Sunday of November. That means that the first day of spring in 2010 is March 20. It is known as the vernal equinox in the Northern Hemisphere and the autumnal equinox in the Southern hemisphere.
The first day of Spring, or the Vernal Equinox, is Saturday, March 20, 2010. Spring officially begins at 4:32 PM UTC (Coordinated Universal Time) which is equivalent to 1:32 PM EDT (Eastern Daylight Savings Time) or 10:32 AM PDT (Pacific Daylight Savings Time). An equinox happens each year at two specific moments in time (rather than two whole days). An equinox occurs twice a year, when the tilt of the Earth’s axis is inclined neither away from nor towards the Sun, the Sun being vertically above a point on the 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, the night and day are approximately equally long. It may be better understood to mean that latitudes +L and -L north and south of the equator experience nights of equal length.
