
Your billion-second birthday is hiding in your thirties
A billion sounds impossibly large. In seconds, it is a milestone you can reach in an ordinary lifetime.
Published 26 October 2026 · Sources included
Read this little wonder →
Revisit your birth year through recorded events and see how the world’s population has changed alongside you.
Every discovery leads to another. Follow your curiosity.
Selected historical events, not a complete news archive. Every event links to its source; population estimates and projections are identified.
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Names: US Social Security Administration, recorded births from 1900 through 2025. Counts omit names with fewer than five occurrences per sex and year; they do not count people currently alive or describe popularity in another country. Namesakes come from our selected birthday archive. Name origins are shown only where we have an identified reference, without inferring ancestry.
Places and events: attributed excerpts from English Wikipedia, with source links. These are selected encyclopedia records and may contain errors, disputed dates or difficult historical subjects. Confirm important details with the linked sources. Nearby records are not recommendations or opening information. Historical excerpts are not automatically matched to your birth year.
Text excerpts from Wikipedia contributors: CC BY-SA 4.0; shortened for display. Photos carry individual author and licence links. Neither Wikipedia nor the featured people endorse this site.
Explore a particular date with birthday facts and personal milestones. Our explanation of world population estimates on your birthday shows how to read the population comparison.
Choose a year from 1900 to 2026 to explore a selected historical timeline. Each entry carries a date and a source, and available illustrations are labelled. This is a collection of recorded moments, not a complete account of that year or a ranking of its most important events.
For years from 1950 onward, the population comparison uses annual UN World Population Prospects 2024 figures. They are dated 1 July rather than your birthday. Estimates and medium projections are labelled separately. The difference describes net global population change, not the number of babies born or a change in your own town.