How long is a year?
How long is a year? It sounds like trivia, but it’s the most load-bearing number in the whole game. The Long Watch is a world you tend across a very long time, so before anything else we had to decide how much of your time one full turn of the seasons should take. Get that wrong and the world feels like either a blink or a slog.
A year here is a dial we set, not a fact of nature. There is no sun we had to obey and no calendar handed to us. We could have made a year take twenty minutes or twenty hours; the world doesn’t care. What cares is the person watching it. This is the story of choosing that one number, and why so much of how the game feels ends up resting on it.
What a year is for
A year has a job to do. It has to be long enough that a single season carries weight — that the arrival of winter is something you notice and brace for, not a lighting change that flickers past. And it has to be short enough that you can live through many of them in a world you keep, watching the same slope green over and brown out and green again, year after year, within a handful of sittings.
Those two pulls — a season that matters, and a lifetime of seasons you can actually witness — are in tension, and the length of a year is where they get balanced. Too long and each season is a marathon nobody finishes; too short and the seasons blur into wallpaper and never land. So we set ourselves a target by working backwards from the feel we wanted, not by guessing: a full year should pass in roughly four to six hours of play. Long enough to mean something, short enough to come round again.
The first guess was ten times too big
When we first sketched the clock that drives all this, the early numbers we plugged in would have made a single year take something like sixty-five hours of play. Roughly ten times too long. A player would have spent a working week of evenings to see one winter arrive.
What’s worth saying is how that got caught: not in testing, not by a player wandering off bored, but by sitting down and doing the arithmetic against the target before we tuned anything. Ticks per hour, hours per day, days per year — multiply it through, divide by how fast the clock runs, and you get hours of real play. The number that came out was so far off the four-to-six-hour band that it was obviously wrong on paper, long before it could ever feel wrong in your hands. A minute of multiplication saved a long, expensive disappointment.
Where it landed
With the target in hand, the tuning was almost calm. We doubled the length of the year — from ninety-six in-game days to a hundred and ninety-two — and a full year settled at about five and a half hours of play, comfortably inside the band we’d aimed for. One in-game day became a little under two minutes of real time, which is a nice pace: a day is long enough to feel like a day, short enough that you’ll see a few of them go by while you’re tending one corner of the world.
Then we split that year cleanly into four equal seasons — spring, summer, autumn, winter, each forty-eight in-game days, each exactly a quarter of the whole. Equal quarters aren’t just tidy. They let everything else in the world hang off the calendar honestly: the equinoxes fall right on the seam between seasons, and the longest and shortest days sit at the very middle of summer and winter, where you’d expect to find them.
Long days, short days
A year you can feel needs more than a clock ticking over — it needs the light to change with it. So the length of daylight itself swings across the year, on a smooth curve rather than a switch. At the depth of winter the world gives you somewhere around seven and a half hours of daylight; at the height of summer, more like sixteen. The rest of the year slides between the two.
That swing is roughly what you’d get standing somewhere around fifty degrees north — a temperate latitude, the kind of place with real long summer evenings and real short, dim winter afternoons. We didn’t want a world on the equator, where every day is the same length and the seasons read only as temperature. We wanted the day itself to grow and shrink, so that even before the leaves turn, the lengthening light tells you which way the year is leaning. This daylight swing is one beat in the wider world-clock survey — the overview this post is the deep dive of.
The year isn’t marked by a number on a clock. It’s marked by how long the light lasts — long golden summer evenings, short pale winter afternoons, and the slow slide between.
Why this number holds the rest up
Once the year had a length you could feel, it became the frame everything else plays out inside. The game’s dangers are organized by how long they take to matter, and none of them mean anything except relative to a year you can sense passing: a sudden threat over minutes, seasonal pressure over in-game weeks, the slow grind of generations over in-game years, and a quiet drift over decades. Winter scarcity only frightens you because you know roughly how long winter lasts. A meadow turning over across a decade of in-game time only reads as a lifetime because you know how long a single year of it takes.
And the year only behaves this way because of two rules that sit underneath it. The clock runs the same every time from the same world, so the same seed plays out the same year, day for day — the seasons turn on schedule, not at random. And the world’s time only moves while you’re actually playing; a saved world doesn’t age in your absence, but that patience is its own story. Getting the year onto the screen also turned up a couple of early slips worth their own telling — including a sun that pointed the wrong way, with the solstices landing a full quarter-year out of place.
A length you can live in
The proof of a year’s length isn’t on the spreadsheet — it’s in a single sitting. At five and a half hours a year, an evening of play carries you through a season or two: you can watch the light stretch toward midsummer, or feel the days draw in as autumn tips toward the cold. Sit with a world over a few evenings and you’ll have seen it round the full circle more than once, the same ground green and bare and green again.
That’s the whole point of choosing the number so carefully. A year long enough that its seasons have weight, and short enough that you outlive many of them, is what makes the world feel temporal rather than static — a place that is genuinely going somewhere, slowly, while you keep watch. You don’t win The Long Watch. You tend it. And the length of a year is the heartbeat you tend it to.
