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I always found it strange that the day which marks the beginning of the season of summer is called "mid-summer", which I understand would mean "middle of summer". While midsummer is on the summer solstice (June 20–21), the actual middle of summer would be about August 6, no?

So why is the first day of summer called midsummer?

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Quite simply because it is the middle of summer! In a world with only two seasons — summer and winter — summer starts with the vernal equinox and ends with the autumnal one. – tchrist Jun 21 '13 at 17:20
    
When you see half a circle of the moon, why do you call it 1st or 3rd quarter? Not every thing is consistent. – Mitch Aug 15 '13 at 12:36
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@Mitch First that is the scientific name lots of people call it a half moon still and the reason is that it is when the moon is one fourth (first fourth) or three fourths (third quarter) through it's orbit around earth – user53034 Sep 28 '13 at 22:50
    
I'd add to that that you don't even need to be aware of the orbit, just that the moon goes from "full" to "none" to "full again". Thus, you have a cycle, and quarters of the cycle are named. – MPelletier Sep 23 '15 at 15:46
    
Your question is backwards. What's odd is that summer is considered to start on the longest day of the year, vs being centered around that day. – Hot Licks Jun 20 at 23:09
up vote 12 down vote accepted

Definition 1. a. of summer in the OED is as follows:

1. a. The second and warmest season of the year, coming between spring and autumn; reckoned astronomically from the summer solstice (21 June) to the autumnal equinox (22 or 23 September); in popular use comprising in the northern hemisphere the period from mid-May to mid-August; also often, esp. as in (c) below, in contradistinction to winter, the warmer half of the year (cf. midsummer n.). (Often with initial capital.)

Using the popular definition of summer, the summer solstice occurs more or less in the middle of summer.

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+1 Good clarification. (I've been flogged for answering a question with a question.) – Kristina Lopez Jun 21 '13 at 19:19
    
Most interesting—I never knew that summer is astronomically reckoned from the summer solstice; I have only ever heard it defined in the ‘popular use’ way: summer comprises June, July, and August (slightly different from mid-May to mid-August, but that is just cultural variation, I presume). – Janus Bahs Jacquet Aug 2 '13 at 9:59

The word midsummer comes to us from Old English, and it has a Dutch cognate midzomer, and Scandinavian cognates (e.g. midsommar in Swedish), so it may even come from an older Germanic language. Both the old Anglo-Saxon calendar and the old Icelandic calendar had two seasons, summer and winter. For these calendars, "Midsummer's Day" would have fallen near the middle of summer (probably not the exact middle ... summer started in mid-April in the old Icelandic calendar, and on a full moon in the old Anglo-Saxon calendar).

The Anglo-Saxon calendar also explains why summer and winter are words which have roots in Proto-Germanic, while fall and spring were not used for the seasons until Middle English, and autumn is originally a Latin word.

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Wikipedia has an extensive definition of solstice. There is a section for solstice celebrations, such as "midsummer."

This excerpt may help solve the puzzle of the relationship between the midsummer and the summer solstice.

In some languages they [the solstices] are considered to start or separate the seasons; in others they are considered to be centre points (in England, in the Northern Hemisphere, for example, the period around the northern solstice is known as midsummer, and Midsummer's Day is 24 June, about three days after the solstice itself).

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Simply put, our modern calendars and media have gotten it wrong. Somewhere along the line of history, perhaps as we became less rural and more urban as a society, the accurate meanings of Midsummer and Midwinter have been lost. One has only to consider the fact that the Solstices mark the MID POINT of the seasons via the course of the Sun. Basing calculations on four seasons, Summer would begin around the first of May, hence the old May Day celebrations, marking that very thing. This is the period when the planting is completed and the Earth is again filled with growing foliage. The Sun is moving toward its' annual apex or high point, which falls at Midsummer around the 20th of June, marking the longest day of the year. After that point, the Suns' energy begins to wane as it reverses its' course back toward Winter and the days grow shorter. (Hence, to say Midsummer is the beginning of Summer is contradictory.) The Autumnal Equinox marks the manifestation of Fall, when the hours of day and night are equal, though it could be said Fall begins around the first of August, when the nights start getting cooler and the foliage begins to dry up. The Harvest season also marks the beginning of the Autumn Tides. Winter as a season begins on the 1st of November, which is why 31 October was thought of as a time of death (the "dying" of the Earth until the next Spring), and came to be associated with celebrations such as Samhain, and later Hallowe'en. Around the 20th of December, we reach Midwinter, or the middle of the Winter season, at which point we experience the shortest day of the year and the Sun then begins to wax in energy as the hours of daylight again grow gradually longer. This explains the Midwinter celebrations (Yule, Saturnalia, etc.) which later became Christmas, as it marks the return of the powers of light in the midst of the deepest darkness. Winter begins to lose its' grip around Imbolc (now Groundhog Day in the USA), when the first stirrings of life begin to reappear, though there are technically six weeks of Winter remaining. The Spring Equinox ushers in the astronomical Spring season, as the hours of daylight and darkness are again in balance, as indicated by the old Spring celebrations which led to our modern Easter (a term based on the name for an old Celtic/Anglo Goddess of Spring). And we soon find ourselves back at May Day, when Summer actually begins.

Of course, in the Southern Hemisphere this is all reversed, as their Midsummer is in December and their Midwinter in June.

In our modern world, we tend to focus on the seasons as they apply to us or our particular region, and not on the astronomical reality which few pay attention to these days. Schools generally let out around the first of June, and many families take vacations during the three months we've come to think of as Summer, so it's understandable as to why we got so confused as to Midsummer and the beginning of Summer. Sadly, not many seem interested in correcting this error, as I have contacted several media sources (including the Old Farmers' Almanac), all to no avail.

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That's the Celtic calendar you're talking about, and not the general pre-historic calendar. It worked quite differently in different places, including ancient Rome, which is where most of our calendar comes from. Of course, there has been a lot of Celtic influence in England, which may explain the word midsummer. – Peter Shor Apr 6 at 20:38

It's an astronomic question vs. a cultural & meteorologic one.

Astronomically, the summer solstice is considered to be "mid-summer", because it is technically the longest day of the year. However, using this definition would place the beginning of summer sometime in early-May, and the end of summer in early-August. For most people, this simply does not make sense, due to our cultural conceptions of the idea of "summer" as the time of year when things are warm and sunny. The given astronomical definition just does not line up with this idea at all!

Meterologically (weather-wise) the summer-solstice is the time of year when things are just STARTING to warm up, so it makes sense, from that cultural perspective, to refer to the solstice as "the first day of summer", rather than "mid-summer".

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I like your timing! – MPelletier Jun 20 at 21:07

In German, 'mit' means 'with' and in the germanic old English 'Mit Sommer' meant 'With Summer'. The old English song of the Solstice is 'Sommer is icommin in' and not, "Sommer is y haf igonne'. :)

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The OED strongly disagrees with your analysis. That is the mid of “middle”: see citation. “OE. midsumor; see mid adj. and summer; cf. ONor. miðsumar (Sw. midsommar, Da. midsommer), MDutch midsomer, middesomer, middensomer (Dutch midzomer), mod.G. mittsommer. In OE. also as two words, with inflexion of the adj.” It further gives as its first sense “The middle of summer; the period of the summer solstice, about June 21st.” and provides this first citation in English: A. 900 tr. Bæda’s Hist. v. xii. (1890) 425 — “Swa sunnan upgong bið æt middum sumere.” – tchrist Nov 11 '13 at 2:34
    
Have you read the lyrics of this song? It's not a solstice song. The lyrics describe spring, ("And springth the wode nu"; the wood is springing, i.e., coming into leaf, and the lambs and calves are still very young). – Peter Shor Mar 4 '14 at 15:01

protected by Mari-Lou A Jun 20 at 22:53

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