Fact
Start with a Gregorian calendar date and explore its color, zodiac label, birthstone, weekday, and two number patterns.
Methods: POLICY-C1
BirthDB
Stories
Trace a date through its color, zodiac sign, birthstone, weekday, and two numbers with the supporting evidence.
Story Guide
At a glance
CategoryStories
Stories6 entries
Approved copy30 entries
Date basisGregorian dates only
About this guide
Fact
This guide does not build a chart that requires a birth time or birthplace.
Methods: POLICY-C1
Fact
A value marked “Calculation” can be reproduced from the displayed input and rule.
Methods: POLICY-C1
Fact
A panel marked “For entertainment” does not assess personality, health, future events, or relationships.
Methods: POLICY-C1
What is shown
Fact
After you choose a month and day, BirthDB places three date-linked items — color, zodiac sign, and birthstone — in one summary.
Methods: POLICY-C1
Calculation
Weekday and year-based number calculations appear only when the input includes a year.
Methods: M-WEEKDAY · M-BIRTH-NUMBER · M-LIFE-PATH
Six stories
Stories built only from Gregorian dates, approved data, and reproducible calculations.
Birth-color spectrum
Compare the two published colors for each date with the colors on nearby days, using only reviewed entries.
Birth number and life path
Compare two number rules calculated from the same full date and see where their reductions diverge.
Encyclopedia of birth symbols
Browse BirthDB's approved date-linked symbols together with the range tables that select them.
Birthday distribution in the catalog
Count publishable birthdays in the current US edition by month, zodiac sign, and birth number.
Group debuts and album release dates
View group and album records on one date axis while preserving every reviewed date precision.
Zodiac signs and zodiac weeks
Follow the twelve zodiac date spans and BirthDB's zodiac-week labels through their stored boundaries.
Display policy
Where to go next
Fact
From the selected date, you can continue to people with that birthday, the date hub, the quiz, or the comparison page.
Methods: POLICY-C1