https://www.cnbc.com/2018/12/18/the-busiest-day-for-returns-to-come-before-christmas-this-year-ups.html

With a drawn-out shopping season and more people ringing up purchases online, the number of packages being returned is actually starting to spike ahead of Christmas, not after it.

For the first time ever, UPS has forecast the busiest day for returns will be Wednesday. Typically, the busiest day for returns falls on Jan. 3, after people have opened their gifts and made it through any New Year's Eve celebrations. But the Atlanta-based carrier says it expects a record 1.5 million packages to be returned Dec. 19, compared with 1.3 million expected on Jan. 3, 2019.