[Question] Out dated steemit Articles

Hello, there,

Usually I read steemit by TAGs.

• created/TAG
• trending/TAG

I found old articles are not visible.
(You need to scroll down down down to list up older articles)

However the date when old ones invisible differs.
Some tags 15 days, the other 7 days.

I hope you can help me the followings

1. Can I see the whole articles by TAG?
   I want to make a list of the whole articles for the TAG I like.

2. I'm also wondering why the dates differ by TAGs?

Thank you...