FIRST_HOUR
hour = tm->tm_hour -FIRST_HOUR;
set_element(e->hour, FIRST_HOUR, LAST_HOUR, FIRST_HOUR);
set_element(e->hour, FIRST_HOUR, LAST_HOUR, FIRST_HOUR);
set_element(e->hour, FIRST_HOUR, LAST_HOUR, FIRST_HOUR);
set_element(e->hour, FIRST_HOUR, LAST_HOUR, FIRST_HOUR);
set_range(e->hour, FIRST_HOUR, LAST_HOUR, FIRST_HOUR,
ch = get_list(e->hour, FIRST_HOUR, LAST_HOUR,
#define HOUR_COUNT (LAST_HOUR - FIRST_HOUR + 1)