in file Japan.php, constant DATE_HOLIDAYS_AUTUMNAL_EQUINOX_PARAM_1979 the initial parameter of the approximate expression to calculate autumnal equinox day from 1948 to 1979
DATE_HOLIDAYS_AUTUMNAL_EQUINOX_PARAM_2099
in file Japan.php, constant DATE_HOLIDAYS_AUTUMNAL_EQUINOX_PARAM_2099 the initial parameter of the approximate expression to calculate autumnal equinox day from 1980 to 2099
DATE_HOLIDAYS_AUTUMNAL_EQUINOX_PARAM_2150
in file Japan.php, constant DATE_HOLIDAYS_AUTUMNAL_EQUINOX_PARAM_2150 the initial parameter of the approximate expression to calculate autumnal equinox day from 2100 to 2150
DATE_HOLIDAYS_EQUINOX_GRADIENT
in file Japan.php, constant DATE_HOLIDAYS_EQUINOX_GRADIENT the gradient parameter of the approximate expression to calculate equinox day
DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_1979
in file Japan.php, constant DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_1979 the initial parameter of the approximate expression to calculate vernal equinox day from 1948 to 1979
DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_2099
in file Japan.php, constant DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_2099 the initial parameter of the approximate expression to calculate vernal equinox day from 1980 to 2099
DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_2150
in file Japan.php, constant DATE_HOLIDAYS_VERNAL_EQUINOX_PARAM_2150 the initial parameter of the approximate expression to calculate vernal equinox day from 2100 to 2150