minix time.h:
Although the Bishop of Ussher (1581-1656) once calculated that based on the Bible, the world began on 12 Oct. 4004 BC at 9 o'clock in the morning, in the UNIX world time begins at midnight, 1 Jan. 1970 GMT. Before that, all was NULL and (void).
или:
#define CLOCKS_PER_SEC 60 /* MINIX always uses 60 Hz, even in Europe */