This is not for journal pages. I know there is a plugin that allows users to go back in time for these page.
This is mostly for people importing lots of old, standalone notes into LogSeq. For this case, it’d be cool to have a plugin that allowed users to redate non-journal page dates so that after users do this, when we go to the ALL PAGES link on LogSeq, we are able to see that note that we actually created in 2011 in it’s proper chronological place and not just the date we imported it/created it in LogSeq.