What does these dates means in the RSS feed ?

[محمد]

By looking inside the RSS feed fields i found these four dates

pubDate
user_read_at
user_date_added
user_date_created

What does mean each one of them ?

Regards
Mohammed

[Charles]

Hi Mohammed,

pubDate = Publication date
user_read_at = The date the user read the book
user_date_added = The date the user added the book to a shelf.
user_date_created = The date the user created a review for a book.

Best regards,
Charles

[محمد]

Thanks Charles

It's almost 3 months since i asked my question

After 3 days, I asked the same question in the feedback group

https://www.goodreads.com/topic/show/...