This train is a better opinion as a SF to Travel, As Poorva Exp Runs very Late and Rest of the trains are Expensive (Duronto/Rajdhani). If you Look at it's Late Margin even in Fog season, You will come to know that Kalka mail is 100 times more punctual than Poorva Express. It Performs Awesome on Such a Busy Route! Avg Delay is of 2hrs 15mins at HWH! However, It often reaches HWH on time or Slightly Before Time.