[feature request] Suggest when to next check weather.

[abridgland]

Sometimes reporting a weather type doesn't narrow down the patterns much or at all e.g. when all patterns agree on the weather at that hour already. However other hours might be guaranteed to specify the pattern, e.g. if the remaining possible patterns each disagree at a specific hour.

To make the process of finding a seed more efficient and save people from checking every hour, it would be cool to display advice on when next to check weather (or simply when it's not needed).

e.g. Check at 13:00 and maybe again at 16:00.
or: No need to check again until 19:00.