I have made an effort to map Astrological parameters (converted into an index of Sentiment) with Nifty from 1996 to 2020! . This will give a sentiment indicator (not price) for NIFTY in the long run. The 1.5 min video is uploaded in You tube under " Nifty Astro Sentiment" under my name.
The future projection is made upto December 2021
People who are interested can have a look .