#include <stdio.h>
#define V1(p) ((long) *(buf+p))
#define V2(p) (256L * (long) *(buf+p) + (long) *(buf+p+1))
#define V4(p) (256L * (256L * (256L * (long) *(buf+p) + (long) *(buf+p+1)) + (long) *(buf+p+2)) + (long) *(buf+p+3))

main(argc,argv)
int argc;
char **argv;
{
  FILE *inf, *fopen();
  unsigned char buf[3150];
  int scid,isyr,isdy,ishr,ismn,issc,nscn,ieyr,iedy,iesc;
  int iscyr,iscday,isctim,irev;
  int iyr,idy,ihr,imn;

  if ((inf=fopen(argv[1],"r")) == NULL) { 
    fprintf(stderr,"ERROR - Unable to open specified L1B file!\n");
    exit(1);
  }
  fread(buf,1,3150,inf);
  scid = V2(0);
  isyr = V2(4);
  isdy = V2(6);
  issc = V4(8);
  nscn = V4(12);
  ieyr = V2(16);
  iedy = V2(18);
  iesc = V4(20);
  fread(buf,1,3150,inf);
  iscyr = V2(12);
  iscday = V2(14);
  isctim = V4(16);
  irev = V4(20);
  iyr = isyr - 1900;
  idy = isdy;
  ihr = issc/1000/3600;
  imn = (issc/1000 - ihr*3600)/60;
  printf("SSMI.L1B.S%1d.D%2d%3.3d.T%2.2d%2.2d.B%5.5d\n",
         scid,iyr,idy,ihr,imn,irev);
}