(*) NAV (per unit) used for trading date ( T date) is the NAV at the date prior to the trading date..
Following the Circular 183/2011/TT-BTC:
Article 2, Clause 10: Valuation date is the date when fund determines the NAV.
Article 2 Clause 11: Trading date ( T date) is the valuation date (Article 2 Clause 11 Circular 183/2011/TT-BTC).
Article 19 Clause 1: Net Asset Value (NAV) means the total asset value owned by the Fund subtracts its related liabilities at the date prior to the valuation date.