The 72 Microseasons of the Old Japanese Calendar
The old calendar split the year into 72 five-day seasons with names like “East wind melts the ice” — a beautiful vocabulary of paying attention to nature.
Before the modern calendar, Japan used a system borrowed from China and refined for local nature: 24 solar terms (二十四節気, nijūshi sekki), each split into three, giving 72 microseasons (七十二候, shichijūni kō) of about five days. Each has a tiny poem for a name: “East wind melts the ice.” “First frogs sing.” “Rainbows hide.” They read like a nature diary of the entire year.
Calendar words
| Word | Reading | Meaning |
|---|---|---|
| 暦 | こよみ koyomi | calendar (the traditional word) |
| 立春 | りっしゅん risshun | first day of spring on the old calendar (early February) |
| 夏至 | げし geshi | summer solstice |
| 冬至 | とうじ touji | winter solstice — yuzu baths and pumpkin |
| 節分 | せつぶん setsubun | the day before spring: throw beans, shout “demons out!” |
A few microseasons worth knowing
Some favorites from the 72: 東風解凍 (harukaze kōri o toku — east wind melts the ice, ~Feb 4), 桜始開 (sakura hajimete hiraku — first cherry blossoms, ~Mar 26), 蛙始鳴 (kawazu hajimete naku — frogs start singing, ~May 5), 大雨時行 (taiu tokidoki furu — great rains sometimes fall, ~Aug 2), and 熊蟄穴 (kuma ana ni komoru — bears hide in their dens, ~Dec 12). Nobody memorizes all 72; the point is the habit of noticing five-day changes.
Why learners love this
The microseasons appear in tea ceremony, wagashi shop displays (see wagashi), and smartphone apps that quietly tell you today's season. They are also secret kanji practice: each name is a compact sentence using nature kanji like 風 (wind), 雨 (rain) and 魚 (fish). Old calendar days still shape real life: 節分 bean-throwing every February and eating eel on the midsummer 土用の丑の日 are national habits.
🔊 Tap any word in the vocabulary tables to hear it spoken.