YEARS_PER_LYEAR_PERIOD 112 ext/date/lib/tm2unixtime.c *y += YEARS_PER_LYEAR_PERIOD * (*d / DAYS_PER_LYEAR_PERIOD); YEARS_PER_LYEAR_PERIOD 60 ext/date/lib/unixtime2tm.c cur_year += YEARS_PER_LYEAR_PERIOD * (tmp_days / DAYS_PER_LYEAR_PERIOD);