When Do the Seasons Start in 2018–2019?

Celebrate The First Days of Winter, Spring, Summer, and Fall

December 1, 2018
Spring, Summer, Fall, Winter 360

When do the seasons—winter, spring, summer, and fall—start? Here are your equinox and solstice dates for 2018 and 2019—plus the definition of the astronomical season versus the meteorological season.

When Do the Seasons Begin?

Each season has both an astronomical start and a meteorological start. It sounds complicated, but trust us, it’s not! The astronomical start date is based on the position of the Sun in relation to the Earth, while the meteorological start date is based on the 12-month calendar and the annual temperature cycle. See below for a more in-depth explanation.

The First Days of the Seasons

Note: These times are based on Eastern time (ET). Subtract 3 hours for Pacific time, 2 hours for Mountain time, 1 hour for Central time, and so on.

Seasons of 2018 Astronomical Start Meteorological Start
SPRING Tuesday, March 20, 12:15 P.M. EDT Thursday, March 1
SUMMER Thursday, June 21, 6:07 A.M. EDT Friday, June 1
FALL Saturday, September 22, 9:54 P.M. EDT Saturday, September 1
WINTER Friday, December 21, 5:23 P.M. EST Saturday, December 1
Seasons of 2019 Astronomical Start Meteorological Start
SPRING Wednesday, March 20, 5:58 P.M. EDT Friday, March 1
SUMMER Friday, June 21, 11:54 A.M. EDT Saturday, June 1
FALL Monday, September 23, 3:50 A.M. EDT Sunday, September 1
WINTER Saturday, December 21, 11:19 P.M. EST Sunday, December 1

Astronomical Season vs. Meteorological Season

The astronomical start of a season is based on the position of the Earth in relation to the Sun. More specifically, the start of each season is marked by either a solstice (for winter and summer) or an equinox (for spring and autumn). A solstice is when the Sun reaches the most southerly or northerly point in the sky, while an equinox is when the Sun passes over Earth’s equator. Because of leap years, the dates of the equinoxes and solstices can shift by a day or two over time, causing the start dates of the seasons to shift, too.

In contrast, the meteorological start of a season is based on the annual temperature cycle and the 12-month calendar. According to this definition, each season begins on the first of a particular month and lasts for three months: Spring begins on March 1, summer on June 1, autumn on September 1, and winter on December 1. Climate scientists and meteorologists created this definition to make it easier to keep records of the weather, since the start of each meteorological season doesn’t change from year to year.

Because an almanac is an astronomical “calendar of the heavens,” The Old Farmer’s Almanac follows the astronomical definition of the seasons. However, we have listed both dates for each season above.

Why Do the Seasons Change?

We have the four seasons because of shifting sunlight (not temperature!)—which is determined by how the Earth orbits the Sun and the tilt of our planet’s axis.

Equinox solstice cycle
Photo Credit: NASA

Spring

On the vernal equinox, day and night are each approximately 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days before the vernal equinox). The Sun crosses the celestial equator going northward; it rises exactly due east and sets exactly due west. See our First Day of Spring page

Crocus field spring

Summer

On the summer solstice, we enjoy the most daylight of the calendar year. The Sun reaches its most northern point in the sky (in the Northern Hemisphere) at local noon. After this date, the days start getting “shorter,” i.e., the length of daylight starts to decrease. See our First Day of Summer page

Sunflower bees

Fall

On the autumnal equinox, day and night are each about 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days after the autumnal equinox). The Sun crosses the celestial equator going southward; it rises exactly due east and sets exactly due west. See our First Day of Fall page.

Fall leaves

Winter

The winter solstice is the “shortest day” of the year, meaning the least amount of sunlight. The Sun reaches its most southern point in the sky (in the Northern Hemisphere) at local noon. After this date, the days start getting “longer,” i.e., the amount of daylight begins to increase. See our First Day of Winter page.

Winter solstice

What’s your favorite season—and why? Let us know in the comments below!

Reader Comments

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Seasons

My favorite time of the seasons is FALL. We witness the beauty of leaf colors especially in Deep East Texas.

winter begins

is miss printed as dec. 21,2018 11:someting pm in the paper back sold form 2018 / 2019. is there more wrong info?

don;t no with to plant i at this time of the year

can you tell me what i can put in the grand i am in FL zip is 32428

Things to plant during winter

You can plant onions, shallots, garlic, peas, and radishes during the winter. There are other things but these are just the ones in my knowledge.

Favorite season

Spring is my favorite season. It signals the start of new growth.
Autumn is my next. I LOVE the colors fall brings to the landscape.

Favorite season

Fall is by far my favorite season. We live on the side of a mountain where the colors are spectacular and I also prefer the cooler temps. I also do love winter and spring, I enjoy the snow and the Christmas season in winter and the renewal of life in the spring. I only tolerate summer because I grow a large vegetable garden, if not for that I would be just fine with no summer at all.

On the side of a mountain

The Editors's picture

It sounds lovely, Monte. Thank you for sharing this impression. As for summer…be careful what you wish for! We think you just might miss that veg garden if there was no summer at all. (We sure would miss our veg gardens!)

Favorite Season

I love summer. Long, pretty days, short pleasant nights. All of nature’s beauty on display. Being outdoors without having to add 10 pounds of clothing, to me, is as close to being “with nature” as it gets. I envy those who live in places like Hawaii where it’s warm all year. And I never get tired of bright blue skies and bright green grass and foliage. Oh, and palm trees!

Challenging the “beginning” of the seasons

The seasons are determined by the amount of light or darkness. The tipping points, if you will... the first day of spring is not the vernal equinox, as that is the day of equal light and dark; the first day that has more light than dark is typically February 2nd, or Imbolc, then equinox, May 1st is the first day of Summer, and the Solstice is the height of Summer (longest day) think ... mid summer’s night dream... then the first day of autumn is opposite February 2nd, August 3d Lammas, next is the autumn equinox, half way between equinox and height of winter (longest night), we have October 31 and November 1st, Halloween, day of the dead: official first day of winter.

Season starts

That is a good answer. Seasons have little to do with equinoxes. Since early times the life in the Northern hemisphere was governed by
agriculture. Planting (Spring, Feb-Apr), Growing (Summer, May-July), Harvesting (Autumn, Fall, Aug-Oct) and Fallow (Winter , Nov-Jan),
which essentially follow weather and light. Ist of May (Mayday) is celebrated as the beginning of summer and June 21 as Midsummer Day.
(Oxford Dictionary)
Statistical weather data can be accumulated for any grouping of days or months without confusing historically designated season names.

Favorite season

My favorite season is Fall. It’s neither hot nor cold. Its absolutely BEAUTIFUL. MY husband has been a trucker for over 20 years. I have ridden with him for most of that time. We have been all over the U.S. Have seen the seasons change everywhere. I LOVE THE HIGHWAY STILL and I LOVE THE CHANGING OF THE SEASONS. I like It neither too hot nor too cold is why I prefer Fall. I really like Spring also, but I can’t stand the summer heat which will soon come is why Fall is my FAVORITE.

Seasons

As it happens, Australia observes the meteorological start dates to the seasons (for the southern hemisphere). Some indigenous cultures had identified six seasons based on climate, but by Canadian standards, winter doesn't really exist in Australia except in a few mountainous areas. A fair part of the continent is closer to the equator than Houston is.

Nice article and graphics.

Nice article and graphics.

I am wondering why the top image shows the seasons in a counter-clockwise rotation. Does it have to do with an old-world calendar or some other tradition?

Great article.

Seasons Image

The Editors's picture

I’m afraid the answer is not so mysterious: the image is a stock photo, so whoever created it just decided to lay out the seasons in that way!

Seasons Image

The graphic depicts this counter-clockwise direction because the earth rotates on its axis in a counter-clockwise direction and also orbits the sun in a counter-clockwise direction.

favorite season

my favorite season is summer because schools out and i get to ride my bike and i like it

FAVORITE SEASON

If the current day is not a spectacular example of whatever season it currently is, I tend to remember all other seasons with fondness.

Favorite season

The love of autumn fall great cool days.

Favorite season

I was born and raised in the San Francisco bay area where we have two seasons...dry and wet. I moved to central Pennsylvania two years ago where, of course, there are four distinct seasons. I find I love all of them! Spring is spectacular after the long winter. The greens are so vibrant and the colors of the blossoms really stand out against the new green. Summer is lush. In California, the grass on the bay area hills turns brown by early May and stay that way until it starts to rain, hopefully, by October. So, to have a lush, green summer is something very new to me. However, I can't stand the humidity! Autumn is the best. It has always been my favorite season, but in California, could only experience it in very small bits. There is some foliage, but nothing like what I've experienced here. And winter...it's cold, but the beauty of the snow makes up for it. I finally have that white Christmas. Winters can be long...we had snow on April 17 of this year (2018) and I was not amused. But the beautiful Spring more than made up for it!

Favorite season

They’re all my favorite! Being they have there own unique beauty. Starting with winter. How you look above you and see thousands & thousands of sparkles in the night sky. Plus the same amount of sparkles below you. From the snow covered ground or the iced over trees. Then how a lot of people decorate for the good lords birthday. Lights lights lights.
Then there’s spring, when the earth thaws and pretty colorful fragrance flowers emerge from the ground and blooming trees. Where you hear the birds singing their songs.
Summer is all about the warm weather. Be able to enjoy the outdoors with family & friends at gatherings at the lakes, parks, any place there’s a celebration. Seems the time people get together more.
Awe. Fall. How you can watch the earth color itself in just vibrate bright beautiful colors. Seeing the greens dull as the trees reflect just gorgeous yellows, reds, oranges. So peaceful to enjoy that beautiful on a walk in the woods. Before the leaves turn brown to make your own music as you walk on them and they crunch. From their dryness Can’t forget jumping in the leaf pile.
All four seasons are just fabulous.

I love fall because the

I love fall because the leaves turn orange, I can wear my favorite sweater and boots, I can start drinking pumpkin spice lattes, the stores are filled with Christmas decorations, thanksgiving is near, because my birthday’s in November, and I can get to play with my pets outside longer without getting a tan haha

Favorite Season

I love autumn. It's always been my favorite season. First of all, I love Halloween. I always have. But I love the leaves falling and the cooling breeze. There's just something so magical about it. I've also loved horror movies since I was a teenager, and by the end of September, it just feels like it's that perfect time of year. (Although, for the last few years, September has been extremely hot. It seems like the seasons are a month off. Spring is April–June, Summer is July–September, Autumn is October–December, and Winter is January–March.) My next favorite season is winter. I love snow, and believe it or not I think there's something beautiful about the naked trees. Summer is third. I hate the heat, but early summer is the best because the trees have all their leaves again and things are full. I don't hate spring, but it is (by process of elimination) my least-favorite season. Too much pollen. At the beginning of spring, I'm missing winter, and by the end of spring, I want summer. So it's not spring's fault; it's just not the best (to me).

Favorite Season

I really like your description of the seasons. I feel similarly to what you've written.

Fall and Winter

Andrew, I too enjoy fall and winter for the exact same reasons as you have written. My German Shepherd girl Ruth is in agreement with our feeling for Fall and Winter as well.
The smell of wood burning in my wood stove and the glow if it's flame sets the mood of relaxing and the hope of a deep blanket of snow here on the mountain in SW Virginia.

Favorite season

Winter, for the shortest length of daylight. I prefer the cold + dark. Less work + maintenance to take care of outside, no gardens to clean up or weed, no grass to mow, only one application of spf needed on these shorter winter days. Plus I love my sweaters + fleece, my coats and winter hats, my wool things. I’m happiest inside looking out at a snowstorm.

Favorite season

Thanks Susan, I agree with you! The shorter "days" and longer nights remind me to make good use of daylight and appreciate the opportunity to enjoy the projects I didn't have time to do during days with lots of daylight. This is when I sew, cook my favorite hearty dishes (and freeze some for the busy days later) and clean some of the nooks and crannies that were neglected when I was outside during the summer and fall. Mostly it's a chance to slow down and enjoy those snowy days inside.

Favorite season

Where I live now in the mountains, I love Fall, because it's cooling, even though we don't get very many super hot days. In winter, I love more rain and the beauty of the snowy days and the cozy warmth inside..... I am 78, so, I don't get out in the snow except when necessary. I love the beautiful days of Spring when the trees and flowers are waking up and the cool days the windows can be opened to enjoy the scents of spring in the air. I love the wonderful four seasons I have enjoyed the past five years especially, because most of my life I lived in Bakersfield, can where there is only two seasons, coolish winter and early spring and late fall. And pretty much hellishl summers that last generally from May to mid October.

Seasons of Favor...

Love Spring, Summer and Winter equally. Those periods offer great diverse outdoor activity time here in Maine. Fall in New England is gorgeous for a while, but then presents way too much cleanup work to be completely enjoyable, until the snow arrives. The nature and short duration of each of my favorite seasons definitely pushes me to get as much out of each one and keeps me very active. I wouldn't have it any other way.

Spring! Late Winter, early

Spring! Late Winter, early Spring actually. By the Summer Solstice even though I hold onto my attitude of good weather until November.. and the Winter Solstice has its purpose and beauty, I always like the lengthening days rather than the shortening.

Earth needs a break

What a beautiful planet we live on and I agree with the comments on all the metals and pollution. Are group studies mule deer and were finding that are pollution and unpredictable weather patterns and science are killing the deer with polluted rains in streams and in soils. And is having a big affect on there breeding seasons. There something and a Idea a child said to.me the other day. She said why don't we stop businesses with drive thru.(walk in and takeout or dine in). She said think all the cars in a day that would be turned off not sitting idle and polluting our cities and less pollution, and also not to.mention most these places are not healthy to eat at anyway. Good idea young one. It's a start and everyone can do.

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