有When is it
问题描述：
有When is it
如果有,它等于What time is it
答
What time is it是指几点了.
what time is it now?five o'clock pm
when is it 是问什么时候.答案不用具体到几点
when is it on?(什么时候开始) About in three hours大概三个小时之内
I like to come to your party,when is it?tomorrow night...