这句英文看来语法有点问题 你意思是"When are you going there?"吗?
无论如何,这问题是在问“几时去”
所以回答该是时间/日子
比如说
When are you going there?
I'm going there on Tuesday at five. (我星期二五时去那里）
或
I'm going there soon. (我很快就去那里）;等