Yes, so probably less buttons with predefined amount of hours would be necessary, I think, if I can easily scroll between views.
About zoom… yes, probably zooming only x axis would be more effective, otherwise I noticed that I need to move down the graph everytime.
I noticed that on mobile and pc there’s a little difference in showing time and day, and that on pc it results cut.
PC:
Mobile:
It happens only in 12h view, while both 6h and 1d views are ok, and only on PC.
Probably showing the year is not necessary and can save space.