Why did my father take me back at that particular time?

More important than his career at that particular time is what's going to happen to him for the next 30 or 40 years.

Did you have any particular time and place in mind?

A thought had come: How long actually, did he remain in one particular time?

No particular time of day nor reason for it to happen.

Did the union act for you at this particular time then?

It means all the living things at a particular time or place.

But after all this was a good house for me at that particular time.

Which might be good for him at this particular time.

At this particular time, she's far more important than you are.