A Universal Timestamp
from Antiquity to Eternity
EDI creates a unique, calendar-independent celestial fingerprint for every day using the exact positions of the planets.
Generate EDI
Historical Date Finder
Find dates matching specific planetary configurations. Select 'Sign' or 'Exact Degree' for any planet.
💡 Hint: For BCE dates, use a minus sign (e.g. -3102 for 3102 BCE). Max acceptable range is 200 years.
Help & Methodology
About the Author
The Ephemeris Day Identifier methodology was pioneered to bridge astronomical truth with everyday timekeeping, offering an eternal, objective standard independent of cultural calendars.