Step 1: Understand the concept of 即期外汇交易 (Spot Foreign Exchange Transaction)
即期外汇交易是指在交易达成后两个营业日内进行交割的外汇交易。

Step 2: Recall the standard settlement period for spot foreign exchange transactions
The standard settlement period for spot foreign exchange transactions is typically two business days after the transaction date.

Step 3: Identify the correct term for the settlement date
The settlement date for spot foreign exchange transactions is commonly referred to as the value date or 交割日 in Chinese.

Step 4: Provide the specific details about the settlement date for spot foreign exchange transactions
For spot foreign exchange transactions, the value date or 交割日 is usually two business days after the trade date.

The final answer is: $\boxed{两个营业日}$