The 36-Hour Clock: Two Meters, One Timer, and Only One of Them Bites
Every trainer in Nutopia has two bars on their dashboard — Hunger and Happiness — and in a hundred and twenty-odd articles this blog has never explained either one. Time to fix that, because the answer is tidier than you would guess and it changes what you do when you open the app with thirty seconds to spare. Both bars run on the same 36-hour clock. Neither one ticks down while you watch. And only one of them has a consequence your pal will feel.
One Clock, Two Bars
Start with the number in the title, because it does double duty: a full bar takes 36 hours to reach empty — and that is true of hunger and of happiness, from the same starting point, at the same rate of about 2.78 points an hour. The two meters are not tuned against each other, they are not staggered, and neither drains faster when the other is low. Fill both at the same moment, walk away, and they will cross every threshold together for a day and a half. One timer wearing two faces.
A useful landmark inside that day and a half: from a completely full bar, it takes about 7.2 hours to fall out of the top mood band. So a pal you left ecstatic this morning is merely happy by dinner, and that is normal decay rather than anything you did.
Nothing Ticks — It Recomputes
Here is the part that answers the question every returning trainer quietly worries about: does leaving the game running drain my pal faster, and does closing it pause the clock? Neither. The meters are not counters being decremented on a timer; they are computed from elapsed wall-clock time whenever your pal's state is read. The game notes when it last updated the bar, subtracts the hours that have passed since, and shows you the result. Refreshing your dashboard ten times in a minute costs your pal nothing at all. Closing the tab for a week does not bank you any credit either — the hours pass whether or not anyone is watching.
There is a housekeeping job that sweeps the whole roster every half hour and writes the current values into the database, but it is a backstop rather than the mechanism — it stamps what the formula would have said anyway. (We checked this morning: every companion in Nutopia carried an identical fresh timestamp from the sweep that had run half an hour earlier.) Think of the clock as continuous and the sweep as someone walking around updating the labels.
Only One of Them Bites
Hunger at zero costs HP
When the hunger bar reaches empty, your pal starts losing health — a steady drain of one percent of maximum HP per minute for as long as it stays there. It does not run to zero: the drain stops at ten percent of maximum, so starvation cannot kill a pal outright. But a pal you left hungry for a long weekend is a pal you will find sitting near the bottom of its health bar, and healing that back is work you did not need to do. Feeding is what stops the clock and restores the bar.
Happiness at zero does something much gentler: nothing to your pal's health. The bar sits empty, the mood name on your dashboard reads at its lowest band, and no HP moves. Which sets up the whole practical point of this article, and it is worth saying plainly rather than implying: the mood name is a readout of the happiness number, and the happiness number is a readout of the clock. What decides how a pal actually performs — in the arcade, in the Battlegrounds, anywhere the game does arithmetic — is what the pal is: its level, its stats, its equipped skills, the gear it carries. If you have thirty seconds and one tap, spend it on the bar that costs your pal HP.
The Five Bands
The mood name your dashboard shows is just which slice of the happiness bar you are standing in:
Petting Is Cheaper Than You Think
The Pet button on your dashboard adds a handful of happiness — and it is generous exactly when you need it to be: the boost grows when the bar is low, and grows again when it is very low, so rescuing a neglected pal takes far fewer taps than topping up a nearly full one. The cooldown between pets is 45 seconds, which is the number the game actually enforces today.
Did You Know?
Petting is not the only lever — toys from your inventory raise happiness too, and they have no cooldown of their own to wait out. Between the two, happiness is the most easily repaired thing about a companion: a bar that took 36 hours to empty can be substantially refilled during one loading screen.
The Practical Version
Everything above, as a habit for the thirty seconds after you log in:
And the cheapest possible way to keep the hunger bar off the floor: the free daily meal at Sybil's Soup Kitchen, which costs nothing at all and exists precisely so that no pal in Nutopia has to go hungry for want of funds. Thirty-six hours is a generous clock. It is just a clock that keeps running when you close the tab.