it was women,who said you had to tell someone when you were

it was women,who said you had to tell someone when you were due to get to a particular destination
在这个句子里,when you were due to 是固定搭配么?

due表示时间到了.这句话的意思是你去某个特定目的地的时间到了.
我在国外工作,我们经常用这个due.比如我们的人事经理怀孕了,大家都问她：when is your baby due?意思是你的孩子什么时候出世?（字面意思是你的宝宝什么时候到时间?到时间了就要生了）
when is the paper due?什么时候交论文?
记住这个意思啊,很有用的一个小词!