My Trading plan : 21-Oct-26

 Nifty will remain closed on 20th Oct on account of Dusshera

The levels for 21-Oct-26 are as follows:

Steps:

1. Look at the ATM IV of next weeks expiry and divide the average by 15.87 (sqr rt of 252 days) because IV projects yearly volatility

2. Add the % result to current spot price to get projected high

3. Subtract the % result from current spot price to get projected low

4. mark 50% of the % result for important up/down move from projected high/low   

Example:

Nifty spot closed at 22888 on 19-Oct-26

The ATM IVs of the next week expiry of 27-Oct-26 is as follows

11.07 + 11.19 + 14.17 + 14.15 = 50.58 / 4 = 12.64/15.87 = 0.79% ( this is step 1)

Step 2 : Projected High = Nifty spot + 0.79% = 22888 + 0.79% = 23068
Step 3 : Projected Low = Nifty spot - 0.79% = 22888 - 0.79% = 22707

Step 4 : Important levels = 0.79/2 = 0.395% = 22888 X 0.395% = 90 points

Important level from low = 22707 + 90 = 22797

Important level from high = 23068 - 90 = 22978

For 21-Oct-26 Nifty key levels to watch would be :

23068

22978

22888 (close price)

22797

22707