aequinoctialis

tropical signs at an equinox (Aries, Libra)

Aequinoctiale vel solstitiale ideo dictum est quod, in hoc signo, horas noctis ac diei aequata moderatione componit, quod a Graecis tropicon isemerinon appellatum est.

‘This sign is called equinoctial or solstitial because in it the hours of the day and night have equal measure, which the Greeks call tropicon isemerinon.’

relating to the time of the equinox

Ergo, ut solet aestus aequinoctialis sub ipsum lunae solisque coitum omnibus aliis maior undare, sic hic qui ad occupandas terras emittitur, solitis maximisque violentior, plus aquarum trahit nec, antequam supra cacumina eorum quos perfusurus est montium crevit, devolvitur.

‘Therefore, just as the equinoctial tide following the conjunction of the moon and the sun usually rises higher than at any other time, so the tide which is sent to overwhelm the lands is more violent than the greatest of ordinary tides and carries more water and does not ebb before it has risen above the peaks of the mountains which it intends to flood.’