Declension table of ?astasamaya

Masculine	Singular	Dual	Plural
Nominative	astasamayaḥ	astasamayau	astasamayāḥ
Vocative	astasamaya	astasamayau	astasamayāḥ
Accusative	astasamayam	astasamayau	astasamayān
Instrumental	astasamayena	astasamayābhyām	astasamayaiḥ astasamayebhiḥ
Dative	astasamayāya	astasamayābhyām	astasamayebhyaḥ
Ablative	astasamayāt	astasamayābhyām	astasamayebhyaḥ
Genitive	astasamayasya	astasamayayoḥ	astasamayānām
Locative	astasamaye	astasamayayoḥ	astasamayeṣu

Compound astasamaya -

Adverb -astasamayam -astasamayāt