I want to know the answer to the following question:
When was the time of Panini?
All the background I'm provided with is that "From the Rigveda until the time of Pāṇini (fourth century BCE) the development of the early Vedic language can be observed in other Vedic texts: the Samaveda, Yajurveda, Atharvaveda, Brahmanas, and Upanishads.". Is that enough to answer the question?
Answer: yes