If you want to write daoku you will need to know its aesthetics, the principles upon which its practice is based. The chief underlying principle is that everything in the universe is connected. Humans are not separate, but are a part of Nature. That is why we can say that hokku is about Nature and humans as a part of Nature.

If you look in the news of climate change, you will quickly see the disastrous consequences when humans ignore the basic fact that humans are a part of — not apart from — Nature.

Nature implies the seasons and their changes. That is why learning the Daoku Wheel of the Year (which also applies to hokku, given that daoku is a category of hokku)  is an important part of daoku aesthetics.

The Wheel of the Year is the “natural” calendar. Here is a simple image of the Daoku Wheel of the Year as found in English-language daoku. You will note that Midsummer’s Day is at the top, and the Winter Solstice is at the bottom. There is a very good reason for that, as you will see as we continue.

So here is the Daoku Wheel of the Year:

As you see, it has four main points, which beginning in the spring are:

1. The Spring Equinox (Vernal Equinox)
2. The Summer Solstice (Midsummer’s Day)
3. The Autumn Equinox (Autumnal Equinox)
4. The Winter Solstice (Yule)

Between these four main points come the “cross-quarter” days:

1. Candlemas (Imbolc), February 1, which begins the season of spring
2. May Day (Beltain/Bealtaine), May 1, which begins the season of summer
3. Lammas or Harvest Home (Lughnasa) August 1, which begins the season of autumn
4. Halloween (Samhain), October 31-November 1, which begins the season of winter

You will also note on the Daoku Wheel that in the spring, the Yang aspect of Nature is increasing. This increase really begins in midwinter, just after the Winter Solstice, but it begins to be noticeable near the time of Candlemas and after.

Yang increases until Midsummer’s Day, at which time it begins its decline, though its effects, like those of midwinter, are usually not noticed in Nature until about a month later.

As Yang declines in late summer, its opposite Yin gradually increases. So in autumn we have increasing Yin, and in spring we have decreasing Yin.


The principles of Yin and Yang and their interactions and transformations give us the seasons of the year. You will recall that Yin is cold, Yang warm. Yin is passive, Yang active. Yin recedes, Yang advances. Yin is wet, Yang is dry. Yin is still, Yang moving. Yin is silence, Yang is sound. Yin sinks, Yang rises.

Remembering also that when Yin or Yang reaches its farthest point — its maximum — it begins to change into its opposite, we are now ready to look at the real calendar — the seasons according to Yin and Yang.

Midwinter is ultimate Yin. At this point Yin reaches its maximum and begins to change into its opposite. Yang first begins to grow within it. So Midwinter is a pivotal point, the lowest on the turning wheel of the year.

Its opposite is Midsummer, when Yang reaches its maximum and then begins to change into its opposite. Yin begins to grow within it. So Midsummer also is a pivotal point — the very height of summer, when it then begins its long decline into winter.

The Spring Equinox — a time when day and night are of equal length — is nonetheless a time of growing Yang, because it comes after Midwinter. Yang continues to grow until Midsummer, when it then begins to change into its opposite.

The Autumn Equinox — again a time when day and night are of equal length — is nonetheless a time of decreasing Yang and growing Yin, because it comes after Midsummer. Yin continues to increase until Midwinter, when the cycle begins again.

We see, then, that the seasons are in constant change and movement as Yin and Yang interact with one another. As Yang increases, Yin declines. When Yang reaches its ultimate, Yin begins to increase within it, and Yang declines. This is a perpetual cycle, the turning Wheel of the Year. We can look at the seasons like this:

Winter: Yin
Spring: Growing Yang
Summer: Yang
Autumn /Fall: Growing Yin

So we see there are two Yang seasons — spring and summer — and two Yin seasons — autumn and winter.

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