I have started to add haunted house operating dates and times to the DMHH calendar. You can view this on the website, or add it to your phone to get a list of the haunts. NOTE: Unless someone can teach me how, I don’t think it auto updates once you add it to your device. As I make changes/corrections, you may have to delete and re-add.
I have started with what is listed on the official websites. If the page shows dates, but not hours, I just put it in as a daily event. Some information is missing — if it’s not easy to find (like the main page of a website should have where/when/how much) I may not have that on my calendar yet.
Here is the link: