Public health officials have expressed concern that multi-household holiday gatherings might have driven a January surge of COVID-19 cases. As noted in report 31, social distancing behaviors have generally been improving since late October, including in our most recent wave conducted over the holidays. However, the scope of our data collection regarding social distancing, which focused on proximity to others in the 24 hours preceding survey response, might have missed important spikes in proximity around Thanksgiving, Christmas and New Year. Therefore, here we evaluate the responses from a survey conducted between December 16th and January 10th, to a separate question asking whether people had gathered for the holidays in November and December.