#ifndef DN0
#define DN0 77906.     /* Days from Sept 13, 1752 to Jan 1, 1966 */
/*#define DN2 90505.   /* Days from Sept 13, 1752 to Jan 1, 2000 */
#define DN2 90324.     /* Days from Sept 13, 1752 to Jan 1, 2000 */
#define DNJ 90324.5    /* Days from Sept 13, 1752 to Jan 1, 2000 Noon*/
#define DNS 74984.0    /* Days from Sept 13, 1752 to Jan 1, 1958 */
#define HalfDaySecs 43200 /* seconds in 12 hours */
#endif