I read about it in book Rudra-yamala, lekhak Rudradev Tripathi. It says the following links:
Pratah kala - related with Chaitra Navaratri.
Madhya kala - Ashadhi Navaratri.
Sayan kala - Ashvan Navaratri.
Madhya-ratri kala - Magha Navaratri.
However, it does not say in detail why there is such a relation. Maybe I misunderstood something?
Someone heard of such a relationship?
A sincere thank You.
Re: The relationship between 4 sandya and 4 Navaratri
thanks for telling us ab about 4 navratris i dont even herad about these i will defiantly ask to my family member for these. navrartri came earlier so i know about a site which provides navratri whatsapp status to share with our favourite persons.