Difference between "A few days ago" with "Some days earlier"?

Hi Dear Friends,

I’m one of your students who is learning English with this useful website,
but I’ve a question:
what is the difference between “A few days ago” with " Some days earlier"?
Thanks

“A few days ago” is used when we are using “now” as our reference point. It means a few days before now.

“Some days earlier” means “several days before the time I am talking about”. It uses a time in the past as its reference point, so we use it when we are telling a story about the past and going even further into the past.

Thank you so much.