Since Oct 2021, Nifty has corrected between 4.7 to 11.2 percent, every time it has closed below 20 VWMA (Low). The correction has lasted 24 to 54 days (21VWMA (Low to 21 VWMA (High) on day closing basis. The present decline has seen six sessions and 3.27 percent dip below 21VWMA (Low), already.