On what basis is the call for 22nd @9:50 a sell signal while the one @11:31 is a buy ? both are above the green line... if the signal can only be drawn retrospectively, is it useful to take a live call?
The Buy or Sell is based on the Trend rule. That is in an UP market it has to make Higher High and Higher Lows.
So accordingly the downtrend started from 5471.
@9:50 the Pivot - 5254 is a continuation of the previous trend, which is a SELL. So the SELL is taken at 5471 or when it crossed below 5432.
@ 11:31, the pivot 5267 did not make a Lower Low compared to 5254. So it is flagged as a BUY.
The Support / Resistance Line with respect to the Recent pivots