READY
READY
Eight hours is the working day the eight hour movement won in the nineteenth century, on the argument that a day divides in three: eight to work, eight to rest, eight for what you will. It is also the sleep figure most adults aim at and miss.
Practically it turns up as a shift, a long charge, something slow left in the oven overnight, and the eating half of a sixteen-eight day, which is the part people mix up: in that pattern the eight hours are when you eat, not when you do not.
The tip for anything this long: use the desktop notification rather than the sound. Eight hours from now you will not be at this tab and possibly not at this desk, and a notification arrives wherever you are while an alarm plays to an empty room. The switch is on the page and asks for permission only when you turn it on.
Start with the button or the space bar. The countdown is anchored to a real clock time, so a sleeping machine does not stretch it.
Yes, as long as the tab stays open. Reopening the page later shows the correct remaining time, or the finished state if the eight hours have already passed while you were away.
Treat it as a countdown rather than an alarm clock. A phone that has locked and dimmed may not play the sound, and no web page can override that, so use a real alarm for waking.
It slows the redrawing, not the timing. The remaining time is computed from the clock every time it is checked, so the number you see when you come back is exact.