Birthday facts
Born on October 21.
Everyone born on October 21 is a Libra — ruled by Venus, fair to a fault, decisive never. The stone is opal, the flower marigold, and the day is shared with Carrie Fisher and Benjamin Netanyahu.
Your book
Born on October 21? Add the year.
Then it is a pop-up book: the sky the day you arrived, the No. 1 that week, the president, what a stamp cost, your life in weeks, and who was exactly your age when they did the thing they are known for — and at the end, a birthday poster of the day, engraved, to take home. One field. The date lives after the # in the link, which no server sees — nothing about you leaves your browser.
Making it for someone else? Send it as a pop-up birthday card.
The old books say
Libra, September 23 to October 22.
The Scales, ruled by Venus, and the only sign that is an object rather than a creature — the books make much of that. An air sign, credited with a sense of fairness, an eye for beauty and a talent for company; blamed for taking a very long time to choose, because both sides really do have a point. Its people are supposed to keep the peace, and to look good doing it.
Astrology, reported rather than endorsed — the astronomy is the part of the book that is real.
Good company
Also born on October 21.
The names most looked up among everyone who shares the day — leaning on the ones who last.
On this day
What October 21 has seen.
The calendar
When October 21 falls.
A Wednesday in 2026, a Thursday in 2027, a Saturday in 2028, a Sunday in 2029, and a Monday in 2030.