Declension table of ?nityotsava

Masculine	Singular	Dual	Plural
Nominative	nityotsavaḥ	nityotsavau	nityotsavāḥ
Vocative	nityotsava	nityotsavau	nityotsavāḥ
Accusative	nityotsavam	nityotsavau	nityotsavān
Instrumental	nityotsavena	nityotsavābhyām	nityotsavaiḥ nityotsavebhiḥ
Dative	nityotsavāya	nityotsavābhyām	nityotsavebhyaḥ
Ablative	nityotsavāt	nityotsavābhyām	nityotsavebhyaḥ
Genitive	nityotsavasya	nityotsavayoḥ	nityotsavānām
Locative	nityotsave	nityotsavayoḥ	nityotsaveṣu

Compound nityotsava -

Adverb -nityotsavam -nityotsavāt