Epoch Year
Get year and julian day given number of days since origin
EPOCHyear(iday, origyr = 1972)
iday |
Number of days since origin |
origyr |
origin year, default=1972 |
List:
yr |
Year |
jd |
Julian day in Year |
Jonathan M. Lees<jonathan.lees.edu>
EPOCHday, recdate
tyears <- 1973:2009 E1 <- EPOCHday(tyears, jd=1, origyr=1972 ) EPOCHyear(E1$jday, origyr=1972 ) ####### here is an example using year Month and day of month ### use March 19 for each year: ii <- tojul(tyears, 3, 19)-tojul(tyears, 1, 1) E1 <- EPOCHday(tyears, jd=ii, origyr=1972 ) EPOCHyear(E1$jday, origyr=1972 )
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