Here's a quick look at when we're expecting to see 2021's Steam sales take place, although we'll go into further detail on each of them during the course of this Steam Sale Timeline article. Regardless of when they start, countdowns usually begin weeks prior to those dates, and we can only blame the draw of cheaper games. Some Steam sales have made a habit of beginning on Thursdays, at 10 AM PDT/ 7 PM GMT, however, there have been exceptions in the past. Several Steam Sales take place throughout the year, giving ample opportunities for players to complete their collections at a discounted price.