Sorry for the delay replying. I have attached a screenshot but the bug is very easy to reproduce without. Tested on two phones. Surely wrong every Android phone.
The image shows two screenshots which both say "13:00" on the time slider, but the data shown is different for both. To be clear, the model has not changed, nor anything else besides moving the time slider. The only difference is that the second image has the time slider moved towards the end of the hour.
Basically every time a user looks at a forecast in the future, there's a 50/50 chance the data displayed will be wrong. This is an enormous bug and probably very easy to fix. I would guess that the code for getting the time from the slider is duplicated in two places, one using
round, one using