रात्री वयख्यदायती पुरुत्रा देव्यक्षभिः |
विश्वाधि शरियो.अधित ||
ओर्वप्रा अमर्त्या निवतो देव्युद्वतः |
जयोतिषा बाधतेतमः ||
निरु सवसारमस्क्र्तोषसं देव्यायती |
अपेदु हासतेतमः ||
सा नो अद्य यस्या वयं नि ते यामन्न्नविक्ष्महि |
वर्क्षेन वसतिं वयः ||
नि गरामासो अविक्षत नि पद्वन्तो नि पक्षिणः |
निश्येनासश्चिदर्थिनः ||
यावया वर्क्यं वर्कं यवय सतेनमूर्म्ये |
अथा नःसुतरा भव ||
उप मा पेपिशत तमः कर्ष्णं वयक्तमस्थित |
उष रणेवयातय ||
उप ते गा इवाकरं वर्णीष्व दुहितर्दिवः |
रात्रि सतोमंन जिग्युषे ||rātrī vyakhyadāyatī purutrā
devyakṣabhiḥ |
viśvāadhi śriyo.adhita ||
orvaprā amartyā nivato devyudvataḥ |
jyotiṣā bādhatetamaḥ ||
niru svasāramaskṛtoṣasaṃ devyāyatī | apedu hāsatetamaḥ ||
sā no adya yasyā vayaṃ ni te
yāmannnavikṣmahi |
vṛkṣena vasatiṃ vayaḥ ||
ni ghrāmāso avikṣata ni padvanto ni pakṣiṇaḥ |
niśyenāsaścidarthinaḥ ||
yāvayā vṛkyaṃ vṛkaṃ yavaya stenamūrmye |
athā naḥsutarā bhava ||
upa mā pepiśat tamaḥ kṛṣṇaṃ vyaktamasthita |
uṣa ṛṇevayātaya ||
upa te ghā ivākaraṃ vṛṇīṣva duhitardivaḥ |
rātri stomaṃna jighyuṣe ||
There is no direct relation between goddess Ratri of Rig-Veda and goddess kali of Agama and Tantra. Let's see this with some points.
Here in Rig-Veda Ratri Sukta of Mandala 10-Sukta 127. goddess Ratri is depicted as sister of goddess usha i.e. dawn - daytime. That means she is the goddess of night as usha is related to daytime. They both are personification s of day & night.
We can clearly see the relationship between them as day & night. As it's said tha Ratri devi accepted / up-coming day-time or goddess Usha as her sister.
Also note that we can't see the word Kali in the sukta , instead word Krishna (black) is used. And it's said that darkness or blackness falls at night time and it vanishishes after the arrival of goddess Usha (dawn , daytime). Instead the characteristic of night i.e. blackness /darkness is only described and this thing is not related to goddess Kali ,as she is completely of different nature and characteristics than this Ratri Devi ,darkness falls upon whose arrival.
We can find similarities between vedic goddess [ **Nirṛti - निऋती** ][2] and Agamic/Tantric goddess Kali.
Nirrti is a Ketu ruled nakshatra in vedic astrology, strongly associated with Kali in form Dhumavati.
The goddess has a dark black complexion. Similar to Devi Kali. Nirrhiti is also similar to Mahavidyas, Dhumavati. She is also named Alakshmi.
Conclusion- So mostly there seems to be no direct connection between goddess Ratri & goddess Kali.
Further reading - The Book of Kali
Here is Hindi Translation of Mandala 10 - Hymn 127
