Declension table of ?sasandhya

Neuter	Singular	Dual	Plural
Nominative	sasandhyam	sasandhye	sasandhyāni
Vocative	sasandhya	sasandhye	sasandhyāni
Accusative	sasandhyam	sasandhye	sasandhyāni
Instrumental	sasandhyena	sasandhyābhyām	sasandhyaiḥ
Dative	sasandhyāya	sasandhyābhyām	sasandhyebhyaḥ
Ablative	sasandhyāt	sasandhyābhyām	sasandhyebhyaḥ
Genitive	sasandhyasya	sasandhyayoḥ	sasandhyānām
Locative	sasandhye	sasandhyayoḥ	sasandhyeṣu

Compound sasandhya -

Adverb -sasandhyam -sasandhyāt