Hello all! If you've ever wanted to make your own dialogue mods for Stardew Valley, I have written a guide that can help you on that journey! Check it out here: https://docs.google.com/document/d/1Aj0M2pJifyJZfkVqKPjCq5IxFZbcw6U6bnbZPVDllTk/edit I also include some of my design philosophy, so I hope this will be helpful to any of you who want to make your own mods!
I have created a rough draft of a guide talking about now to use content patcher to do dialogue mods, as well as talking in more depth about how the question and response dialogue commands work. I also discovered a way to put location specific dialogue for characters into the game (really easy with content patcher) as well as location + heart level specific dialogue. you can find my guide at https://docs.google.com/document/d/10oy2JQ69ofU5zeXNRfKPznrziSXYRmcXIaii9OqMOTw/edit this guide is a work in progress as it is currently the result of a single, sleep deprived night's work
Any incredible guide! Thank you so much for writing it. There's a lot in there that could make for some amazing dialogue mods in the future! Also, your hunch is correct: Mon0-10 will display that dialogue on a Monday of any season if there's nothing else for the game to call.