Today marks the first day of spring in the Northern Hemisphere, and is marked by the equinox.
Online, the event has been marked with a Google Doodle.
The spring equinox is significant because after a long and dark winter, the hours of day and night are equal for the first time this year – about 12 hours each.
1/51 Richard Oakes
Google Doodle celebrating Richard Oakes' 75 birthday
2/51 Google Doodle celebrating the Antikythera Mechanism
Google Doodle celebrating the Antikythera Mechanism
3/51 Ferdinand Monoyer
The famous French ophthalmologist, who invented the eye test, would have celebrated his 181st birthday today
4/51 Google Doodle celebrating Giro d'Italia's 100th Anniversary
Google Doodle celebrating Giro d'Italia's 100th Anniversary
5/51 Google Doodle celebrating Nasa's Cassini probe
Google Doodle celebrating Nasa's Cassini probe
6/51 Google Doodle celebrating Fazlur Rahman Khan
Google Doodle celebrating Fazlur Rahman Khan
7/51 Google Doodle celebrating Sergei Diaghilev
Google Doodle celebrating Sergei Diaghilev
8/51 Google Doodle celebrating St. Patrick's Day
Google Doodle celebrating St. Patrick's Day
9/51 Google Doodle celebrating Holi Festival
Google Doodle celebrating Holi Festival
10/51 Google Doodle celebrating St. David's Day
Google Doodle celebrating St. David's Day
11/51 Abdul Sattar Edhi
Google Doodle of Abdul Sattar Edhi on February 28 2017
12/51 Seven earth-sized exoplanets discovered
Google Doodle celebrates Nasa's discovery of seven earth-sized exoplanets in new solar system
13/51 Bessie Coleman
Google Doodle honours the first African American woman to get an international pilot licence on her 125th birthday
Google Doodle celebrates Christmas caroling
Today's Google Doodle features activist Steve Biko
16/51 Walter Cronkite
Google celebrates Walter Cronkite's 100th birthday
17/51 Ladislao José Biro
Google celebrates Ladislao José Biro 117th birthday
Google celebrates its 18th birthday
19/51 The history of tea in Britain
Google celebrates the 385th anniversary of tea in the UK
20/51 Autumnal equinox 2016
Google marks the start of fall
21/51 Paralympics 2016
Google marks the start of the Paralympic Games 2016
22/51 Nettie Stevens
Google celebrates Nettie Stevens 155th birthday
23/51 Father's Day 2016
Google celebrates Father's Day
24/51 Elizabeth Garrett Anderson
Google celebrates Elizabeth Garrett Anderson 180th birthday
25/51 Earth Day 2016
Google celebrates Earth Day
26/51 Ravi Shankar
Google marks Pandit Ravi Shankar's 96th birthday
27/51 Olympic Games in 1896
Google are celebrates the 120th anniversary of the modern Olympic Games in 1896
28/51 World Twenty20 final
Google celebrates the 2016 World Twenty20 cricket final between the West Indies and England with a doodle
29/51 William Morris
Google celebrates William Morris' 182 birthday with a doodle showcasing his most famous designs
30/51 St Patrick's Day 2016
Googlle celebrates St Patrick's Day on 17 March
31/51 Caroline Herschel
Google marks Caroline Herschel's 266th birthday
32/51 Clara Rockmore
Google celebrates Clara Rockmore's 105th birthday
33/51 International Women's Day 2016
#OneDayIWill video marks International Woman's Day on 8 March
34/51 St David's Day 2016
Google marks St David's Day
35/51 Leap Year 2016
Google celebrates Leap Day on 28 February 2
36/51 Lantern Festival 2016
Google celebrates the last day of the Chinese New Year celebrations with a doodle of the Lantern Festival
37/51 Stethoscope Inventor, René Laennec
Google celebrate's René Laennec's 235th birthday
38/51 Valentine's Day 2016
Google celebrates Valentine's Day with a romantic Doodle
39/51 Dmitri Mendeleev
Google celebrate Dmitri Mendeleev's 182nd birthday
40/51 "The televisor" demonstartion
Google Doodle celebrates 90 years since the first demonstration of television or "the televisor" to the public
41/51 Professor Scoville
Google marks Professor Scoville’s 151st birthday
42/51 Sophie Taeuber-Arp
Google marks Sophie Taeuber-Arp's 127th birthday
43/51 Charles Perrault
Google celebrates author Charles Perrault's 388th birthday
44/51 Mountain of Butterflies discovery
Google celebrates the 41st anniversary of the discovery of the Mountain of Butterflies
45/51 Winter Solstice 2015
Google celebrate the Winter Solstice
46/51 St Andrew's Day 2015
Google marks St Andrew's Day with doodle featuring Scotland's flag and Loch Ness monster
47/51 41st anniversary of the discovery of 'Lucy'
Google marks the 41st anniversary of the discovery of 'Lucy', the name given to a collection of fossilised bones that once made up the skeleton of a hominid from the Australopithecus afarensis species, who lived in Ethiopia 3.2 million years ago
48/51 George Boole
Google marks George Boole's 200th birthday
49/51 Halloween 2015
Google celebrates Halloween using an interactive doodle game "Global Candy Cup"
50/51 Prague Astronomical Clock
Google celebrates the 605th anniversary of the Prague Astronomical Clock, one of the oldest functioning timepieces in the world
51/51 Autumnal Equinox 2015
Google marks the autumnal equinox on 23 September
And as with each change in the season, there are rituals and traditions which accompany it.
Read on for The Independent’s guide to the Spring equinox.
What is Ostara?
Ostara is the name given by Pagans and Wiccans to the spring equinox and is one of the eight ‘sabbats’ – periods they believe make up the year.
Some observers believe the event is a revival of ancient celebrations of spring, which merged into Easter after the spread of Christianity in the British Isles.
When is daylight savings?
In the UK the clocks will ‘spring forward’ on Sunday, 26 March at 1am.
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- Thousands travel to Stonehenge for the Summer Solstice
- It's not just neo-pagans like me who should be connecting with nature
Can you balance an egg?
This unusual question stems from the urban myth that it is possible to stand an egg on its end during the first day of spring. Proponents say this is because of a unique gravitational pull which occurs at this time of year.
But this is untrue. There is no change to the Earth’s gravitational pull during the spring equinox – or any other day. It is possible to balance an egg on its end, but, with the right know how, this is possible any time of the year.
What happens on the vernal equinox?
The vernal equinox is the astrological name for the spring equinox. It marks the moment the sun crosses the equator from south to north. It occurred at 10.29 GMT.Google Doodle Celebrates Its 16th Birthday
What is the solstice?
The equinox differs from the solstices, which occur twice yearly to mark the sun’s most northern or southern position relative to the equator.
Source : http://www.independent.co.uk/news/uk/home-news/spring-equinox-2017-vernal-google-doodle-what-is-ostara-when-begins-latest-google-doodle-daylight-a7639131.html