When Does Spring Start in 2024? Date and Time
In Ireland, spring 2024 had two official start dates: 1 March for meteorological spring and 20 March for astronomical spring. The difference matters because forecasters and equinox-watchers are answering different calendar questions.
When Does Spring Start in 2024?
Astronomical Spring
- In Ireland, the 2024 spring equinox fell on 20 March (Drik Panchang equinox table).
Meteorological Spring
- 1 March 2024 was the first day of meteorological spring in Ireland (The Irish Times).
Irish Spring Markers
- Met Éireann frames Irish spring through traditional, astronomical and meteorological markers (Met Éireann).
Spring 2024 in Ireland
- Met Éireann later ranked spring 2024 as the 2nd warmest spring on record (Met Éireann climate statement).
Meteorological spring 2024: 1 March · Astronomical spring 2024 (Ireland): 20 March, 03:06 UTC · Astronomical spring 2024 (U.S. Eastern): 19 March, 11:06 p.m. EDT · Leap year effect: equinox shifted earlier in 2024
One table keeps the 2024 dates straight.
| Definition | 2024 start date | What it is based on |
|---|---|---|
| Meteorological spring | 1 March 2024 | Fixed months: March, April, May |
| Astronomical spring in Ireland | 20 March 2024, 03:06 UTC | The vernal equinox |
| Astronomical spring in U.S. Eastern time | 19 March 2024, 11:06 p.m. EDT | Same equinox, earlier local date |
| Traditional Irish spring marker | Around 1 February | St Brigid’s Day and older seasonal markers |
When does spring start in 2024?
For meteorologists in Ireland, spring 2024 started on 1 March. For astronomers, it started at the vernal equinox: 20 March at 03:06 UTC.
“Meteorological Spring begins Wednesday 1st March.”
Met Éireann
What is the exact date of the vernal equinox in 2024?
In UTC, the vernal equinox was 20 March at 03:06. That is the same moment as 19 March at 11:06 p.m. Eastern Daylight Time (Time and Date).
What time does spring start in 2024 (Eastern Time)?
In the U.S. Eastern time zone, spring began at 11:06 p.m. EDT on 19 March 2024.
Why does spring start on March 19 in 2024?
2024 is a leap year, and the calendar shift pushed the equinox earlier in local time zones. That is why U.S. headlines pointed to 19 March, while Irish and UTC calendars pointed to 20 March.
For readers tracking dates across a full year, How Many Work Days in a Year? 2026 Guide by Country is a useful companion to calendar variability.
The pattern: the same equinox can arrive on different calendar dates depending on time zone.
Is March 21 always the first day of spring?
No. March 21 was once a popular rule of thumb, but the equinox has been moving around the calendar.
What is the difference between meteorological and astronomical spring?
Meteorological spring covers March, April and May, so it starts on 1 March each year (UK Met Office). Astronomical spring starts at the equinox, which is an orbital event.
Climate researchers use fixed meteorological seasons to keep comparisons stable across decades (Maynooth University).
How often does spring start on March 21?
In the 21st century, the March equinox has clustered around March 20, with occasional March 19 dates. March 21 is not a fixed annual appointment.
Why does the equinox date vary?
The tropical year is about 365.24 days, not a clean 365. Leap years align the calendar but push equinox dates around. Royal Museums Greenwich explains the equinox as a moment tied to Earth’s orbit and axial tilt.
“Snow falls across Ireland as March brings a white spring.”
The Irish Times
The quote is from 1 March 2024 coverage, a reminder that meteorological spring can still look wintry.
The implication: a calendar date such as March 21 is a cultural memory, not an astronomical guarantee.
What is the official first day of spring?
The answer depends on which calendar system is described as official. In astronomy, spring begins at the vernal equinox; in meteorology, it begins on 1 March.
What defines the vernal equinox?
The vernal equinox is the moment the Sun crosses the celestial equator. The name carries the idea of “equal night,” although daylight and night are not exactly equal at every latitude (Time and Date).
Does the equinox mark the official start of spring?
Yes in astronomy, no in weather records. Met Éireann treats 1 March as meteorological spring and the vernal equinox as another marker of spring.
How do different cultures define spring’s start?
In Ireland, the government portal points to Met Éireann as the national weather authority, and Met Éireann presents traditional, astronomical and meteorological markers side by side. Irish folk tradition also treats St Brigid’s Day on 1 February as an early sign of spring.
What this means: Ireland has no single “official” spring; it has a weather spring, an astronomical spring, and an older traditional spring.
What month is spring in Ireland?
In seasonal weather records, spring in Ireland is March, April and May. In astronomical terms, it runs from the spring equinox to the summer solstice.
When does meteorological spring begin in Ireland?
Met Éireann starts meteorological spring on 1 March. The Irish Times reported snow on 1 March 2024 while describing it as the first day of meteorological spring.
When does astronomical spring begin in Ireland?
In 2024, astronomical spring began on 20 March in Dublin according to Drik Panchang’s equinox table. The Irish Examiner described the spring equinox as the first day of astronomical spring.
What is the best month to visit Ireland for spring weather?
Late May tends to be the most reliable spring travel window because it stays inside meteorological spring while moving closer to summer. Met Éireann’s spring 2024 climate statement showed why spring can be unpredictable: the season was very mild, wet and dull overall.
“Spring 2024 was the 2nd warmest spring on record for the Island of Ireland.”
Met Éireann
For travelers weighing spring weather, the Punta Cana all-inclusive resort guide shows how seasonal timing changes a destination.
The catch: a meteorological spring that begins in March can still behave like winter, as the snow on 1 March 2024 showed.
When exactly is spring 2026?
For the next several years, the March equinox lands on 20 March in UTC: 2025, 2026 and 2027.
What is the spring equinox date for 2025?
20 March 2025.
What is the spring equinox date for 2026?
20 March 2026.
What is the spring equinox date for 2027?
20 March 2027.
Time and Date’s seasons index places each of those March equinoxes on 20 March in UTC (Time and Date).
Confirmed for 2024
- Meteorological spring in 2024 began on 1 March (Met Éireann).
- Astronomical spring is defined by the vernal equinox (Royal Museums Greenwich).
Still depends on context
- Whether meteorological or astronomical spring is “official” depends on whether you are tracking weather records or orbital events.
- The local date of the equinox depends on time zone: UTC and Ireland saw 20 March, while U.S. Eastern time saw 19 March.
The pattern: for the next several years at least, the equinox settles on 20 March in UTC, with local dates determined by when you cross midnight.
met.ie, sunrisesunsettime.org, theirishroadtrip.com, weatherspark.com, met.ie, rte.ie, irishexaminer.com
Frequently Asked Questions
What is the vernal equinox?
The vernal equinox is the moment the Sun crosses the celestial equator, marking the astronomical start of spring in the Northern Hemisphere. It occurs around March 19–21 each year.
Why does spring start on different dates each year?
The calendar year of 365 days does not match Earth’s 365.24-day orbit. Leap years add a catch-up day, which shifts the equinox between March 19 and 21.
When does spring start in the Southern Hemisphere?
The Southern Hemisphere’s spring begins at the September equinox, roughly September 22 or 23.
How long is spring?
Astronomical spring runs from the March equinox to the June solstice. Meteorological spring is exactly three months: March, April, May.
Does spring always start on March 20?
No. The equinox can fall on March 19, 20 or 21. In 2024, it fell on March 19 in U.S. time zones and March 20 in Ireland and UTC.
When does spring end in 2024?
Meteorological spring ended on 31 May 2024. Astronomical spring ended at the June solstice on 20 June 2024.
What is the difference between equinox and solstice?
An equinox occurs when day and night are nearly equal; a solstice marks the longest or shortest daylight period. Equinoxes begin spring and autumn; solstices begin summer and winter.
How do leap years affect the start of spring?
Leap years insert 29 February, which nudges the equinox earlier in local calendars. That is why 2024’s equinox was 19 March in the Americas and 20 March in Ireland and UTC.
For Ireland, the safest answer is to name the system: Met Éireann uses 1 March for records, the equinox marks the astronomical season, and older tradition points to St Brigid’s Day. That is why the same “start of spring” question can produce two correct dates.
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