https://www.gamespot.com/articles/destiny-2-xur-location-guide-where-is-xur-and-what/1100-6455802/

For the second-to-last time this year, Xur has arrived in Destiny 2. The merchant is back for a limited time to sell a selection of Exotic gear, as well as some other new options that were recently introduced. Despite overlapping with Christmas, there's nothing too special about this appearance, but you may want to pay him a visit nonetheless. Here's where to find Xur this week and a rundown on what he's selling on PC, PS4, and Xbox One.