Harvests are every week, modified according to the seasons. Before, the harvested amount was fixed, and the amount of harvests each week was linked to the seasons. But even in winter, that was once a week (I think)
That's not how it used to work, but how it used to work isn't important. The way it works now is that harvest is every 7 days, regardless of season. The amount harvested varies based on season, weather, and regional production value.
