The date for the start of the astronomical spring season each year is called the Vernal Equinox, one of two days on which the overhead path of the Sun moves across the equator. The actual date depends on one's location north or south of the equator, and will shift due to the 1/4 days by which the orbital year exceeds the calendar year.
For the Northern Hemisphere, the Vernal Equinox is the "March Equinox," which for most of the early 21st century (2001-2006 and 2008-2017) will be March 20.
This is the Autumnal Equinox south of the equator.
For the Southern Hemisphere, the Vernal Equinox is the "September Equinox," which falls on September 23 (2010-2011) or September 22 (2012-2013).
Canada, the USA, and some European countries customarily observe the astronomical date (ca. March 20-21/ca. September 22-23) while Australia, New Zealand, and some other European countries follow the climatological date (March 1/September 1). Customary dates are often declared "official" by the mass media although no legal basis exists for this designation. Preferences for the astronomical or climatological dates vary in other countries. Lunar dates are used across much of east Asia to determine the beginning of spring.
The ecological beginning of spring (vernal season) has no fixed dates but is marked locally by the beginning of the growing season for most plants when the local mean daily temperature reaches 6 degrees C/42 degrees F. Many ecologists also recognize a pre-spring (prevernal) season that precedes spring. Pre-spring is a transitional time at the end of winter when only the hardiest plants like the crocus begin to bloom.
Tropical regions of the Earth do not have a spring season.
The first day of spring is an equinox, as is the first day of autumn. Solstices occur on the first day of winter and the first day of summer.
The first day of spring is called vernal equinox!
The first day of Spring in France is the 20th I think.
The first day of spring in 1960 was March 20.
March 20th, was the first day of spring in 1965.
March 21st is the official day of spring but March 22nd is the first full day of spring.
It was the first FULL day of spring, the vernal equinox fell on March 20th the first day (actual) of spring.
On the first day of spring the season changes. Spring comes and you say 'goodbye' to winter.
The first day of spring 2009 fell on March 20.
In 2004 the first day of spring occurred on March 20.
The First Day of Spring in NZ is September 1, 2010.
The Vernal Equinox determines the first day of spring. The Autumn Equinox is what determines the first day of fall.
The date of Easter is determined by the first day of spring. Easter is held on the first Sunday after the first full moon after the first day of spring.
The first day of spring in 2008 was March 20th.
The official first day of spring in 2008 is March 20th.
Spring officially begins on the first day of September in Australia.
The Scientific name for the first day of spring is the Vernal Equinox!
Tuesday, 20 March 2012 is the first day of spring
The first day of spring in 2014 will fall on March 20th. This will be a Thursday.
The first day of spring is always March 20, or the spring equinox. It is also called the vernal equinox.
The first day of Spring in 2019 falls on a Wednesday. This will be Wednesday, March 20th and is known as the Spring Equinox.
the first day of spring
The first day of Spring in Australia occurs on 1 September every year.
The first day of spring is called the vernal equinox.
The first day of spring is called the vernal equinox or the March equinox.