FLAG_YDAY
flags |= FLAG_YDAY;
flags |= FLAG_YDAY | FLAG_WDAY | FLAG_MONTH |
if (!(flags & FLAG_YDAY) && (flags & FLAG_YEAR)) {
flags |= FLAG_YDAY;
flags |= FLAG_YDAY;
if ((flags & (FLAG_YEAR | FLAG_YDAY)) == (FLAG_YEAR | FLAG_YDAY)) {