Valmiki Ramayana 2.52.2

भास्कर उदय कालो अयम् गता भगवती निशा ।असौ सुकृष्णो विहगः कोकिलः तात कूजति॥

bhāskara udaya kālo ayam gatā bhagavatī niśā |asau sukṛṣṇo vihagaḥ kokilaḥ tāta kūjati ||

Our plain-language meaning of this verse is waiting for scholar review.