What Does TJD Stand For?

TJD stands for Truncated Julian Day

Truncated Julian Day (TJD) is a method of counting days that simplifies the Julian Day Count by truncating the decimal portion, representing whole days only. It is calculated by subtracting 2,448,000 from the Julian Day Number, allowing for easier daily timekeeping in various astronomical and scientific applications. TJD is particularly useful for tracking time intervals in space science and geophysics.