Declension table of ?niśāvasāna

Masculine	Singular	Dual	Plural
Nominative	niśāvasānaḥ	niśāvasānau	niśāvasānāḥ
Vocative	niśāvasāna	niśāvasānau	niśāvasānāḥ
Accusative	niśāvasānam	niśāvasānau	niśāvasānān
Instrumental	niśāvasānena	niśāvasānābhyām	niśāvasānaiḥ niśāvasānebhiḥ
Dative	niśāvasānāya	niśāvasānābhyām	niśāvasānebhyaḥ
Ablative	niśāvasānāt	niśāvasānābhyām	niśāvasānebhyaḥ
Genitive	niśāvasānasya	niśāvasānayoḥ	niśāvasānānām
Locative	niśāvasāne	niśāvasānayoḥ	niśāvasāneṣu

Compound niśāvasāna -

Adverb -niśāvasānam -niśāvasānāt