The Mothman Equinox in Fallout 76 is a seasonal event that features the devout Cult of the Mothman around the Appalachia region. You will go on a journey to commence a ritual that summons the Wise Mothman. To complete it, you will need to collect, slaughter, and protect objectives, which will give you plenty of rewards in the process. This event can be done every hour as soon as your in-game clock hits XX:00.