Phrases Talking About Past Events

One day

Meaning

On a specific day in the past

John: Have you ever seen a shooting star?
Alice: Yes! <b>One day</b>, while camping, I saw a whole shower of them.
John: Wow, that's amazing! How many did you see?
Alice: I lost count! It was incredible. I'll always remember that night, <b>one day</b> I hope to see that again.