年齢計算
年、月、日などで正確な年齢を計算します
合計16,517日です
| 曜日： | 日曜日 |
|---|---|
| 次の誕生日 | 🎉 次の誕生日まで284日 |
| 1981はうるう年でしたか？ | いいえ、1981はうるう年ではありませんでした。365日でした。 |
よくある質問
1981/02/01に生まれた場合、何歳ですか？
1981/02/01に生まれた場合、あなたは45歳2ヶ月22日です（2026/04/23時点）。合計16,517日です。
1981/02/01は何曜日でしたか？
1981/02/01は日曜日でした。
1981はうるう年でしたか？
いいえ、1981はうるう年ではありませんでした。365日でした。
♒ Your birth constellation: Aquarius
Traditional dates: January 20 – February 18
Aquarius is a large but faint constellation in the southern sky. The ancient Babylonians associated this area of sky with the god Ea, who was depicted pouring water. In Greek tradition, it represented Ganymede, the cup-bearer to the gods. The Age of Aquarius, a concept from astrology, is based on the precession of equinoxes and has no fixed astronomical start date.
The zodiac system was created by Babylonian astronomers around 500 BCE as a coordinate system for tracking the Sun, Moon, and planets along the ecliptic. The twelve signs divide the ecliptic into 30-degree segments. Due to the precession of equinoxes — a 26,000-year wobble of Earth's axis — the astrological dates no longer correspond to the actual constellations the Sun passes through. Modern astronomy treats the zodiac as a historical coordinate system, not a personality framework.
Read more about the astronomical history of the zodiac in our complete zodiac guide.
🐓 Chinese zodiac: Rooster (Metal)
In the traditional Chinese calendar, 1981 is a year of the Rooster with the element Metal. The Chinese zodiac (shengxiao) is a repeating 12-year cycle, with each year associated with an animal. Combined with the five elements (Wood, Fire, Earth, Metal, Water), the full cycle takes 60 years.
The Rooster (or Chicken) is associated with punctuality and fidelity in Chinese culture, as the rooster's crow marks the break of dawn. It is one of the "six domestic animals" that were central to Chinese agricultural life. In Chinese painting tradition, the Rooster symbolizes the five virtues: literary, martial, courageous, benevolent, and trustworthy.
The Chinese zodiac is a cultural and calendrical tradition with roots stretching back over 2,000 years. It was originally tied to astronomical observations of Jupiter's roughly 12-year orbital period. While widely used in East Asian cultures for festivals, naming customs, and social tradition, it is best understood as cultural heritage rather than a predictive system.
Explore the full Chinese zodiac cycle in our Chinese zodiac guide.
| Zodiac sign | ♒ Aquarius |
|---|---|
| Chinese zodiac | 🐓 Rooster |
| Generation | Millennial |
年齢に関する豆知識
The world's oldest known tree, a bristlecone pine named Methuselah, is over 4,800 years old.