The Spring Equinox is one of the days of the year when a straight line can be drawn between the sun and the center of the Earth that runs through this geographic line.
The Equator
"Spring" is by far the most iconic section of the "Four Seasons" symphony of this Italian composer and violin virtuoso.
Vivaldi
A spring is a point on Earth's surface where this flows from an aquifer to Earth's surface.
Water
Historically, St. Patrick's Day has been associated with lifting the restrictions of this other liturgical season, which is seen as a cause for the day's association with alcohol consumption.
Lent
On April 1, 1998, a UK radio host called this then president of South Africa pretending to be PM Tony Blair. Only after asking "what he was doing for April Fools' Day?" did the line go dead.
Nelson Mandela
Given Spring brings frequent collisions of cold arctic air and warm tropical air in the American Midwest, this meteorological threat are most frequent in Spring in the "alley."
Tornadoes
Spring is never specifically mentioned, but since it's been a "long, cold, lonely winter," this George Harrison Beatles song is probably about it.
"Here Comes the Sun"
A "Spring" can be a political term for movements of student protests or revolutions, such as this "spring" that took place in the Middle East and North Africa from 2010-2014.
Arab Spring
This symbol in the lower corner of the city flag of Montreal, represents the city's Irish community, and features prominently in their St. Patrick's day parade, one of the longest running in North America.
Shamrock
April Fools' day is thought to originate with teasing those who stuck to celebrating the New Year of the older Julian calendar on April 1, instead of on January 1 of this new calendar.
The Gregorian Calendar
The Equinox on this planet (every 14.7 years) causes its most recognizable features to be edge-on to the sun, making them much darker then they usually are.
Saturn
This country-western singer released a "Season Suite" series of songs, including "Late Winter, Early Spring (When Everybody Goes to Mexico)".
John Denver
Samuel Spring was a Revolutionary War chaplain who carried Benedict Arnold from the battlefield after his leg was shattered in the siege of this city, during a failed invasion of Canada in 1776.
Quebec
The idea of St. Patrick driving the "snakes" out of Ireland is probably an allegory for his efforts against these leaders of pagan tradition, like Panoramix (Getafix)!
Druids
DAILY DOUBLE
April Fools' Day was thought to be referenced in 1392 by Geoffrey Chaucer in this collection of stories. This particular story had a rooster tricking a fox on the "32nd day of March", but it has mostly been disproven as a mistranslation.
It's dangerous for plants to flower using warm temperatures as the signal, since one cold day afterward could kill the flowers. Instead, most plants flower in the spring using this as a signal.
Length of daylight
John Fogerty
Arthur Spring was a Irish politician for this left-wing political party not as powerful in the Republic of Ireland, but the largest minority party in the UK.
Labour
Born on St. Patrick's Day, 1955, he played Ken Mattingly in Apollo 13.
Gary Sinise
On April 1, 2007, NPR announced that their sponsor was this fictional corporation, who produced "protein-rich food products in a variety of colors."
Soylent
DAILY DOUBLE
This is the "EN" part of the ENSO climatological cycle, and is associated with particularly warm waters in the equatorial Pacific, particularly off the coast of South America.
Simon and Garfunkel wrote "[this] Come She Will," a song that personifies the months of the year and their associated weather.
"April Come She Will"
In mechanics, anything that produces this proportional to displacement is considered a spring.
Force
St. Patrick's Battalion is celebrated on St. Patrick's Day in this country. The Battalion was mostly made of Irish Catholic immigrants who defected from the U.S. army from 1846-1848.
Mexico
On April 1, 1980, the Boston local news reported that this mountain had volcanically erupted.
The Great Blue Hill