Declension table of jyotiḥśāstra

Neuter	Singular	Dual	Plural
Nominative	jyotiḥśāstram	jyotiḥśāstre	jyotiḥśāstrāṇi
Vocative	jyotiḥśāstra	jyotiḥśāstre	jyotiḥśāstrāṇi
Accusative	jyotiḥśāstram	jyotiḥśāstre	jyotiḥśāstrāṇi
Instrumental	jyotiḥśāstreṇa	jyotiḥśāstrābhyām	jyotiḥśāstraiḥ
Dative	jyotiḥśāstrāya	jyotiḥśāstrābhyām	jyotiḥśāstrebhyaḥ
Ablative	jyotiḥśāstrāt	jyotiḥśāstrābhyām	jyotiḥśāstrebhyaḥ
Genitive	jyotiḥśāstrasya	jyotiḥśāstrayoḥ	jyotiḥśāstrāṇām
Locative	jyotiḥśāstre	jyotiḥśāstrayoḥ	jyotiḥśāstreṣu

Compound jyotiḥśāstra -

Adverb -jyotiḥśāstram -jyotiḥśāstrāt