Date doesnt match up on extended data graph

when I change to the extended data graph it changes the date at the top to a day later than it is.

Are you using the date picker or the “Prev Day” / “Next Day” button?

Either. it looks to be certain dates.
This is on the extended data tab btw.

I also just noticed the ones that were wrong had the time as 12:00AM at the top where as the others had the time as 11:55PM

This is the expected behaviour.

The date/time on the graph is the last update, the last 5 minutes of the day (05/10) is 12:00AM on the next day (06/10).

The 12:00AM data point will be recorded when an update for the times 23:58 / 23:59 is uploaded.