“请问你的签证日期是多少？”用英语该怎么说？谢谢了！

这里的日期有异议：
1.发出的日期。
2.有效日期.
1.what's the issuing date of your visa?
2.what's the duration of your visa?
you can choose accordingly.

When is your visa issued?
What's the duration of your visa?

按照字面是应该这么翻译的：When is your visa issued?

不过中文含意不清晰。到底是想说签证是什么日期签发的？
还是想问签证期有多长？

WHAT\'S THE DATE OF YOUR LICENCES?

What's your visa date,please?