Vers 3-4

Niśānta līlā Verse 4

The eigth dayly periods of the pastimes of Rādhā-Kṛṣṇa

राघा कृष्ण अष्टकाल लीला
রাধা কৃষ্ণ অষ্টকাল লীলা

1. निशान्त  - niśānta - নিশান্ত - end of night (3:36-6:00) 
2. प्रातः  - prātaḥ - প্রাতঃ - early morning  (6:00 - 8:24)
3. पूर्वाह्न - pūrvāhna - পূর্বাহ্ন -  mid-morning (8:24 - 10:48)
4. मध्याह्न - madhyāhna - মধ্যাহ্ন  - midday (10:48 - 15:36)
5. अपराहन - aparāhna - অপরাহ্ন  - late afternoon (15:36 - 18:00)
6. सायं - sāyaṁ - সাযং - evening (18:00 - 20:24)
7.  प्रदोष - pradoṣa - প্রদোষ -  late-evening (20:24 - 22:48)
8. नीशा - niśā - নিশা - night (22:48 - 3:36)

Let us take shelter of Sri Krishna as he:

enters the goṣṭa from the forest bowers at the end of night ;
milks the cows and takes his meals
in the early morning (2 prātaḥ-līlā)
and in the evening (6 sāyaṁ-līlā);

sports with the sakhas while grazing the cows
in the mid-morning (3 pūrvāhna)
and in the late afternoon (5 aparāhna);

attends various entertaining performances with his father and the Vrajavasis in the mid-evening (7 pradoṣa);
and midday (4 madhyāhna) and mid-night (8 niśā) enacts prema- keli pastimes with Sri Rādhika in the forest bowers of Vrindavan.

Rasa-tarangini Tika:
In this shloka, Sri Rupa presents the basis of Ashta-kala (8 periodes) lila smaran.
He briefly touches on the events of each of the eight praharas (time periods).
In fact, however, the day is divided into ten periods and the midday (madhyahna) and mid-night (nisha) pastimes last two such periods each.

So a normal prahara lasts two hours and twenty-four minutes and is divided into six dandas of twenty-four minutes each, but the two exceptional periods last twice so much.
The reason for this is that these are Krishna's favorite times of the day when he performs the most enjoyable pastimes with Sri Radha and her sakhis. Even so, though Govinda-lilamrita especially focuses on Sri Sri Radha Govinda's madhura pastimes, Srila Kaviraj Goswami also presents beautiful narrations of Vrindavan's other rasas - shanta, dasya, sakhya and vatsalya.