goldn 158 lib/pengine/rules.c uint32_t epact, diy, goldn; goldn 163 lib/pengine/rules.c goldn = (y % 19) + 1; goldn 164 lib/pengine/rules.c epact = (11 * goldn + 18) % 30; goldn 165 lib/pengine/rules.c if ((epact == 25 && goldn > 11) || epact == 24)