Declension table of ?pañcaviṃśatirātra

Masculine	Singular	Dual	Plural
Nominative	pañcaviṃśatirātraḥ	pañcaviṃśatirātrau	pañcaviṃśatirātrāḥ
Vocative	pañcaviṃśatirātra	pañcaviṃśatirātrau	pañcaviṃśatirātrāḥ
Accusative	pañcaviṃśatirātram	pañcaviṃśatirātrau	pañcaviṃśatirātrān
Instrumental	pañcaviṃśatirātreṇa	pañcaviṃśatirātrābhyām	pañcaviṃśatirātraiḥ pañcaviṃśatirātrebhiḥ
Dative	pañcaviṃśatirātrāya	pañcaviṃśatirātrābhyām	pañcaviṃśatirātrebhyaḥ
Ablative	pañcaviṃśatirātrāt	pañcaviṃśatirātrābhyām	pañcaviṃśatirātrebhyaḥ
Genitive	pañcaviṃśatirātrasya	pañcaviṃśatirātrayoḥ	pañcaviṃśatirātrāṇām
Locative	pañcaviṃśatirātre	pañcaviṃśatirātrayoḥ	pañcaviṃśatirātreṣu

Compound pañcaviṃśatirātra -

Adverb -pañcaviṃśatirātram -pañcaviṃśatirātrāt