jdcnv {astrolibR} | R Documentation |
Convert Gregorian dates to Julian days
jdcnv(yr, mn, day, hr)
yr |
year, integer scalar or vector |
mn |
month, integer (1-12) scalar or vector |
day |
day, integer 1-31) scalar or vector |
hr |
hours and fractions of hours of universal time (U.T.), scalar or vector |
julian |
Julian date |
Converted to IDL from Yeoman's Comet Ephemeris Generator, B. Pfarr, STX, 1988
R adaptation by Arnab Chakraborty (June 2013)
# To find the Julian Date for 1978 January 1, 0h (U.T.) # Result: julian = 2443509.5 jdcnv(1978, 1, 1, 0.)