a clock / time?
I sit, usually silently, at a very certain place
clocks, usually, don't make any sounds (places in public like trainstations where there are clocks with fixed positions)
When I'm not silent, I buzz erratically, all over the place
clocktowers all over the country "buzz" at the same time (e.g. full hours) or maybe alerts on phones when people wake up buzz all over the place
Forgive me for my horrid rhyme, but you've seen me all the time
clocks everywhere.. phone, computer, on your arm, outside...
I'm willing to bet that you're looking at me right now
computer clock on your taskbar
I've overtaken every other thing that draws your attention to it,
not sure about that one
you may think I watch over you, but you just need to reinterpret
time seems to rule your day but it should be you deciding what to do when and not time (I guess?)