English: Samhuinn is a Gaelic festival marking the end of the harvest season and the beginning of winter or the "darker half" of the year. Traditionally, it is celebrated from the very beginning of one Celtic day to its end, or in the modern calendar, from sunset on 31 October to sunset on 1 November. Samhuinn was seen as a liminal time, when the boundary between this world and the Otherworld could more easily be crossed. This meant the Aos Sí, the 'spirits' or 'fairies', could more easily come into our world. Offerings of food and drink were left outside for them. The souls of the dead were also thought to revisit their homes seeking hospitality. For Samhuinn 2016, the afternoon's editathon at the University of Edinburgh focused on improving the quality of Wikipedia articles relating to notable lives unearthed from newspaper obituary articles.