Summer Never Arrives All at Once: Discovering Japan Through Its 72 Micro-Seasons

Summer doesn't arrive in Japan all at once.

It comes quietly.

A slightly brighter morning.
A warmer breeze.
The distant sound of insects that wasn't there yesterday.

Long before the calendar declares that summer has begun, nature has already started to change.

Japan is well known for its four seasons—spring, summer, autumn, and winter—but there is another, older calendar that notices these subtle transitions with remarkable care.

It is called the 24 Solar Terms (Nijūshi-sekki), which divide the year into twenty-four seasonal chapters.

Each of those is further divided into three, creating the 72 Micro-Seasons (Shichijūni-kō).

Each micro-season lasts only about five days and is named after a small change in nature: flowers blooming, birds raising their young, insects appearing, or the shifting patterns of wind and rain.

Rather than measuring time by dates alone, this traditional calendar invites us to notice what the natural world is quietly telling us.

At the moment, Japan is in the solar term called Shōsho, or Minor Heat—the time when summer begins to gather strength.

From July 17, we enter one of the 72 Micro-Seasons known as Taka sunawachi waza o narau, meaning "Young hawks learn to fly."

It is a gentle image.

Young hawks, watched over by their parents, begin practicing the skills they will one day need to soar through the sky on their own.

Nature reminds us that growth rarely happens all at once.

It comes through quiet practice, small attempts, and patient observation.

This is also the season when foods such as molokhia, freshwater eel, and peach leaves are traditionally enjoyed in Japan.

For generations, people have welcomed seasonal foods not only for their flavor but also as a way of living in harmony with the changing climate and preparing for the heat of midsummer.

I also enjoy traveling according to Kyūsei Kigaku, a traditional Japanese system that suggests auspicious directions for journeys.

But I don't believe that appreciating the seasons requires any special knowledge.

Simply tasting what is in season.

Noticing the color of the evening sky.

Feeling that today's wind is just a little different from yesterday's.

Asking yourself, "What season is quietly unfolding around me?"

That small question can gently transform the way an ordinary day feels.

The 72 Micro-Seasons are not something to study like a textbook.

They are small invitations to pause—to notice, even for a moment, that the world is always changing.

Summer never arrives in a single day.

The air changes first.

Then the light.

Then the living world begins to whisper that a new season has arrived.

Perhaps one of the quietest joys of life in Japan is learning to listen.

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About Japan's 72 Micro-Seasons

The 72 Micro-Seasons (Shichijūni-kō) are part of Japan's traditional seasonal calendar. Each lasts for about five days and is named after a subtle change in nature, offering a gentle reminder to slow down and notice the world around us. Even today, many people enjoy following these seasonal rhythms as a way to reconnect with everyday life.