In the early days of the church in Kirtland, fasst & testimony meetings lasted six hours:
The first Thursday of each month was fast day. In meetings that often lasted six hours, the Saints sang, prayed, bore their testimonies describing divine manifestations in their lives, and exhorted each other to live the gospel. Eliza R. Snow fondly remembered these gatherings as “hallowed and interesting beyond the power of language to describe. Many, many were the pentecostal seasons of the outpouring of the spirit of God on those days, manifesting the gifts of the Gospel and the power of healing, prophesying, speaking in tongues, the interpretation of tongues, etc.” 28
28. Nicholas G. Morgan, comp., Eliza R. Snow, an Immortal: Selected Writings of Eliza R. Snow (Salt Lake City: Nicholas G. Morgan, Sr., Foundation, 1957), p. 63.