My great-grandparents told of the Great Disappointment. In Rome, NY, a large group of people laid down in a field awaiting the Second Coming. When that didn’t happen, they got up and went home. Your link to the Millerites links to Bahai, which is a Persian section with Shia roots. This made me think of the recent deaths of the Iranian leaders and what will happen to the Iranian people. God is moving. The Iranians need deliverance through Christ for sure.
Praying much for the Iranian people who are seeking hope. May God’s power sweep over that nation with a mighty revival, is my prayer!!!