There’s an app for this [0,1]. It follows the calendar and shows you the current season, it’s haiku, seasonal foods, etc. It’s free to view the current season, but you can pay (one-time) to access to the entire calendar. The company that makes it [2] publishes a book as well, though last I checked, it was only in Japanese. They also have an app [3,4] for Nara, showcasing local activities in the area during each microseason.
I'm not complaining, it's just a bit strange. :D