A Can Em All day length is about three and a half minutes of shift time, and the skill tree can push it to roughly four minutes. Then the timer stops and you get nearly a minute of night overtime where you keep working. The clock is much less of a limit than it looks, because the timer only stops the clock.
Can Em All day length is about three and a half minutes
A full shift runs for about three and a half minutes of day time. The official screenshots show the on-screen timer anywhere between 0:36 and 3:09 depending on when the shot was taken, which is the same three-and-a-half-minute window seen at different points in a shift.
The skill tree can extend the day further, up to about four minutes if you buy enough of those upgrades. It is worth taking, but it is a small gain — roughly fifteen seconds on a run that is mostly limited by other things.
What the night period after the timer changes
When the day timer runs out, the shift does not end. There is a night period of nearly a minute of overtime, and you keep working through it:
- You can still collect cans.
- You can still sell them.
- You can still get creatures into the grinder.
Only the shift timer stops. That matters because the transport tube is the real bottleneck in a normal run — a can sitting on the floor is worth nothing — and the night period is free time to finish feeding them down. If the vacuum suddenly refuses to pick anything up, you are probably in body mode instead of can mode. The vacuum controls guide covers that switch.
Extending the day in the skill tree
The day-length upgrades sit in the same tree as everything else, so they compete with the machines and the multipliers.
- Take them once the vacuum, the crusher and the belt are running.
- Do not take them before the belt — a longer day is worth nothing if you cannot process what arrives.
- Treat them as a late-game convenience rather than a priority.
Fifteen extra seconds rarely changes what you can afford. The multipliers do.
Why the clock stops being the problem
By the time you have the vacuum and a straight conveyor belt, the day length is no longer what limits you. The limits are:
- How fast you can clear creatures off the floor.
- How fast the crusher turns them into cans.
- How fast the cans go down the tube.
Those are the levers the production guide covers, and none of them is time-of-day.
How the shift fits into your first hours
Early on, the shift timer is the most noticeable thing in the game, and that is exactly backwards: you should be spending your first hour on the vacuum, the crusher and the belt rather than on damage. The early game tips guide has the priority order, and the short version is that a factory which runs itself makes the clock irrelevant.