Last dealing time refers to the time when the financial markets close for trading on a particular day. It is the final time by which investors and traders must execute their orders for the day. After the last dealing time, orders will be executed at the next available price when the markets open again. The last dealing time varies depending on the financial instrument and the exchange where it is traded. It is important for traders and investors to be aware of the last dealing time for their investments to ensure that they can make timely decisions and manage their risks effectively.