def _from_jd_equinox(jd):
jd = trunc(jd) + <NUM_LIT:0.5><EOL>equinoxe = premier_da_la_annee(jd)<EOL>an = gregorian.from_jd(equinoxe)[<NUM_LIT:0>] - YEAR_EPOCH<EOL>mois = trunc((jd - equinoxe) / <NUM_LIT>) + <NUM_LIT:1><EOL>jour = int((jd - equinoxe) % <NUM_LIT:30>) + <NUM_LIT:1><EOL>return (an, mois, jour)<EOL>
Calculate the FR day using the equinox as day 1