Editorial Policy
Our standard
BornClock follows Google’s E-E-A-T framework — Experience, Expertise, Authoritativeness, Trustworthiness. Every calculator and article is built on verifiable public data and reviewed by the BornClock Editorial Team before publishing.
Sources we trust
WHO, CDC, NIH, NASA, Wikipedia, peer-reviewed journals (The Lancet, BMJ, JAMA), and official almanacs. We cite primary sources whenever a claim is non-obvious.
Review process
Each new calculator is independently tested against known cases before launch. Blog articles are fact-checked and reviewed for clarity. Major updates are dated; minor edits are tracked internally.
Medical disclaimer
Health-related tools (Life Expectancy, BMI) are informational only and never a substitute for professional medical advice, diagnosis, or treatment.
Corrections
Spotted an error? Email us via the contact page and we will investigate within 5 business days. Confirmed corrections are applied promptly and noted in the page footer.
Independence
We do not accept payment to alter editorial content. Sponsored or affiliate links, when present, are clearly disclosed.
Data sources
BornClock uses primary data sources exclusively: WHO Global Health Observatory, UN World Population Prospects, NASA JPL Horizons (astronomical calculations), US Naval Observatory Astronomical Almanac, peer-reviewed journals (The Lancet, Genome Biology, Circulation, Aging Cell), and official national statistics agencies. We do not aggregate from secondary sources without citing the original.
AI and automated content
Some BornClock pages use AI-assisted drafting, reviewed and verified by our editorial team before publication. All factual claims — statistics, research citations, historical dates — are independently verified against primary sources. AI is a writing tool here, not a fact source.
Calculator methodology
Every calculator on BornClock has a dedicated methodology page explaining the data sources, calculation method, and known limitations. We publish our methodology so users can evaluate our approach. Calculators are tested against known cases before launch and re-verified when underlying data sources update. See /how-it-works for full methodology details.
Update policy
Pages are reviewed when: (1) an underlying data source publishes updated figures, (2) a reader submits a correction that is confirmed, or (3) our annual content audit identifies a material change. The “Last reviewed” date shown on each page reflects the most recent review, not the original publication date.