This tool searches for full 12-month itineraries that visit every one of the countries with weather data, one country per month, without breaking any visa rule, monsoon season or maximum-stay limit. The first search explores every possible combination, so it can take a while — after that, the result is cached and loads instantly. Once it finishes, you'll see one candidate year-long route per screen: use Previous/Next to browse all the ones found, and "Transfer itinerary to main page" to send the one you like to your Nomad plan.