Many times, I am asked this very question by potential sellers and the answer is it depends. Right now we are heading into the holidays and the coldest part of the year and a shifting market. As the market shifts more heavily in the favor of buyers, starting to sell an apartment in late November,December is like riding a CitiBike uphill with a cold wind blowing in your face. It can be done but it might be better to pursue a different strategy. I have already advised a couple of potential sellers to start late January or February. The reason is that the holidays will be past and that timing will be just prior to the Spring selling season.
Typically, also starting right before a major holiday is not ideal like Memorial Day, July 4th or Labor day. However, in those cases you can start right after the holidays as potential buyers return from their vacations or long weekends.