P银行：What’s your spot USD against SGD 5 mio？
M银行：50/70.
P银行：At 2.0450，we buy SGD and sell USD 5 mio.
M银行：Ok，done.We sell SGD and buy USD 5 mio at 2.0450，value July 10，2009.Our USD to…（account）where is yourS GD？
P银行：Our SGD to…（account）.Thanks for the deal MHTK.
M银行：Thanks a lot，PCSI.

本次外汇交易的交割日是哪一天？