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GENERAL JD NUMBER AND JULIAN DATE FOR GIVEN CALENDAR MODE, DATE AND TIME
WITH OPTIONAL DELTA T
DATE = 2024 March 28 - Thursday (Gregorian)
Time UT HMS = 00:00:00 = 0.00000000 day
Delta T ±HMS = +00:00:00 = +0.00000000 day
JD12 = 2460398 = JD For 12h (midpoint of date) = Julian Day number for date
JD00 = 2460397.5 = (JD12 - 0.5) = JD for 00h (beginning of date)
JDTT = 2460397.5 = (JD00 + UTFrac + dTFrac) = Full Astronomical JD
TIME VARIABLES CORRESPONDING TO JD AND RECKONED FROM J2000.0
J2000.0 = 2000 Jan 01 at 12h TT
T = 0.2423682409 Julian centuries reckoned from J2000.0
t = 0.0242368240 Julian millennia reckoned from J2000.0
DIFFERENCE BETWEEN GREGORIAN AND JULIAN CALENDARS
Gregorian calendar date = Julian calendar date plus 13 days
Julian calendar date = Gregorian calendar date minus 13 days
Note that the corresponding days of the week are the same on both calendars
regardless of the actual number of days difference between the calendars.
Jay Tanner - 2024 - v3.4
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