It is the fifth of April today.(对划线部分提问)

问题描述:

It is the fifth of April today.(对划线部分提问)
划线部分:the fifth of April
呜呜,我们这学期学的是剑桥三级两本,而寒假作业却是下学期学的牛津,根本看不懂哇~

What day is it today?
今天几号?