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Decimal Time - ConversionsFormulasTo obtain a Julian Date from Gregorian calendar date (D/M/Y) and hours (UT): int(D-32075+1461×(Y+4800+(M-14)/12)/4+367×(M-2-(M-14)/12×12)/12-3×((Y+4900+(M-14)/12)/100)/4) + UT/24 - 0.5From Fliegel, H. F. and van Flandern, T. C. (1968). Communications of the ACM, Vol. 11, No. 10 (October, 1968).
To find decimal dates from the tables below: TablesLocal time = UT
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