DAYS_PER_4_YEARS   90 calendar/french.c #define DAYS_PER_4_YEARS   1461
DAYS_PER_4_YEARS  134 calendar/gregor.c #define DAYS_PER_4_YEARS   1461
DAYS_PER_4_YEARS  153 calendar/julian.c #define DAYS_PER_4_YEARS   1461