Just came across three words in the DHamma wondering if you know the meaning of them. They are :játikkhetta, asterism (nakkhatta), and samvattamanakappa Context on where they are used are:
-"A Buddha is born only in this Cakkavála out of the ten thousand Cakkaválas which constitute the játikkhetta (AA.i.251; DA.iii.897)."
-"Gotama was conceived under the asterism (nakkhatta) of Uttarāsālha, under which asterism he also made his Renunciation (DA.ii425), preached his first sermon and performed the Twin Miracle. Under the asterism of Visākha he was born, attained Enlightenment and died; under that of Māgha he held his first assembly of arahants and decided to die; under Assayuja he descended from Tāvatimsa."
-AND "No Buddha is born during the samvattamánakappa, but only during the vivattamánakappa (SNA.i.51)."