NAME: YMD2DN PURPOSE: Convert from year, month, day to day number of year. CATEGORY: CALLING SEQUENCE: dy = ymd2dn(yr,m,d) INPUTS: yr = year (like 1988). in m = month number (like 11 = Nov). in d = day of month (like 5). in KEYWORD PARAMETERS: OUTPUTS: dy = day number in year (like 310). out COMMON BLOCKS: NOTES: MODIFICATION HISTORY: Written by R. Sterner, 20 June, 1985. Johns Hopkins University Applied Physics Laboratory. RES 18 Sep, 1989 --- converted to SUN R. Sterner, 1997 Feb 3 --- Made work for arrays. Copyright (C) 1985, Johns Hopkins University/Applied Physics Laboratory This software may be used, copied, or redistributed as long as it is not sold and this copyright notice is reproduced on each copy made. This routine is provided as is without any express or implied warranties whatsoever. Other limitations apply as described in the file disclaimer.txt.