Why I am able to see difference between last traded price and closing price ?

Why I am able to see difference between last traded price and closing price ?

The last traded price (LTP) usually differs from the closing price of the day. This because the closing price of the day is the weighted average price of the last 30 mins of trading. The last traded price of the day is the actual last traded price. The difference is usually more if the market is moving around quite a bit in the last 30 mins.