Where are the names sourced?
From public Wikimedia/Wikidata-style knowledge sources when available.
Who shares my birthday?
SOURCE-BASED GUIDEReviewed 19 August 2026EgoTools Editorial
Quick answer
Match your month and day with notable people represented in public Wikimedia knowledge data. Sharing a birthday means the same recurring month and day, not the same birth year.
How the calculation works
- Use only the month and day for the birthday match.
- Query public knowledge data for people with that birth date pattern.
- Present a readable sample rather than claiming a complete list of everyone ever born that day.
Worked example
A user born on 1 January can match people born on 1 January in many different years. Their ages, professions and historical prominence can all differ.
When this is useful
Birthday twins are a simple discovery hook: your recurring month/day connects you with people from different years, professions and places. The value is exploration, not a statistical statement about who is most likely to share your date.
Exact vs approximate
The month/day match is deterministic once the source record contains a birth date. Completeness is not deterministic: public knowledge bases have uneven coverage, so EgoTools labels the result as a sourced sample rather than a census.
What can change the answer
- Knowledge-base coverage is uneven across countries, professions and eras.
- Source data can change over time as public records are edited.
- The result is not a statistically representative sample of people sharing the date.
Common mistakes to avoid
- Do not imply that a famous-person list represents everyone born that day.
- Do not confuse same birthday with same age.
Frequently asked questions
Why are some dates richer than others?
Public knowledge-base coverage is not uniform.
How EgoTools treats this result
EgoTools treats the list as sourced discovery content, not as a complete census or population statistic.
Editorial method
The tool logic is treated as the reference for calculations. Worked examples are checked against the same method, external facts are sourced where relevant, and wording is reviewed so exact results, estimates and entertainment are not presented as the same thing.