Declension table of rātri

Feminine	Singular	Dual	Plural
Nominative	rātriḥ	rātrī	rātrayaḥ
Vocative	rātre	rātrī	rātrayaḥ
Accusative	rātrim	rātrī	rātrīḥ
Instrumental	rātryā	rātribhyām	rātribhiḥ
Dative	rātryai rātraye	rātribhyām	rātribhyaḥ
Ablative	rātryāḥ rātreḥ	rātribhyām	rātribhyaḥ
Genitive	rātryāḥ rātreḥ	rātryoḥ	rātrīṇām
Locative	rātryām rātrau	rātryoḥ	rātriṣu

Compound rātri -

Adverb -rātri