NAME
DateUT2JD
Translate a date and hour string to its corresponding Julian day value.
USAGE
DateUT2JD [-ET] datehourstring
PARAMETERS
datehourstring: Is a string representing the UT moment to translate.
OPTIONS
-ET: Instead of returning the UT decimal Julian day, make a correction to return the E.T. Julian day. (UT = Universal Time, something very near the Greenwich Mean Time, ET is the Ephemeris Time, used by astronomers to compute the ephemeris).
RETURN
The Julian day in decimal days.
EXAMPLE
PutTxt [DateUT2JD -TE [SunSetUT]]
Output
2439018.25
2439018.25
In this example the two values are the same because difference between ET and UT is only significant for far old horoscopes.