Halloween is a holiday celebrated each year on October 31st, and Halloween 2021 falls on a Sunday. The celebration marks the day before the Western Christian feast of All Saints and initiates the season of Allhallowtide, which lasts three days and concludes with All Souls’ Day. If you would like to customize your Synology DSM desktop, you can pick your favorite scary Halloween wallpaper for your DSM 7 from the collection below.