问时间用英语怎么表达?

例句：

1.起程的日期定了吗？

Has the departure date been fixed?

2.该国的`选举委员会将议会选举日期提前了3天。

The country's election commission has advanced the date of parliamentary elections by three.

3.由于航班提前，侦探更改了度假日期，但是这样一来就和审判冲突了。

The detective changed his holiday dates when his flight was brought forward and it now clashed with the trial.

4.选举日期必须提前两个月。

The election date had to be brought forward by two months.

5.这份文件的日期可以从其中多次提到内战之处进行推断。

The date of the document can be deduced from references to the Civil War.