How can I refer to today/the past when talking in future perspective? [closed]

In particular, I am confused as to which of these two sentence is correct:

  1. Your grandchildren will ask how 2020 is like
  2. Your grandchildren will ask how 2020 was like

The sentence is spoken now (2020), but from the future, 2020 is the past.

Any help is appreciated!


The question the grandchildren will ask is:

  • "What was 2020 like?"

You should retain the past tense in your statement. So it should be:

  • Your grandchildren will ask what 2020 was like.

Note that the usual expression is What is x like?, not How is x like?