Julian Date

Julian Date is a continuous count of days and fractions of days since noon on January 1, 4713 BCE (Julian calendar epoch). It’s used by astronomers, researchers, and some engineers to precisely timestamp events because it avoids calendar variations and leap years, providing a straightforward, unambiguous way to measure time intervals over long periods. For example, July 20, 2023, at 12:00 UTC might correspond to a specific Julian Date like 2460174.0, making calculations and time comparisons more consistent across different dates and times.