What is it about New Year’s Day that attracts car thieves? Do car owners forget to lock up after a wild New Year’s Eve celebration?

We may never know the answer, but we can get a sense of what holidays have the most car-theft activity, thanks to the Annual Holiday Vehicle Theft Report from the National Insurance Crime Bureau.

The NICB analyzed car thefts in 2013 and ranked the year’s holidays by the number of thefts. New Year’s Day came out on top with 2,184, followed by Halloween at 1,998 and Memorial Day at 1,972.

In comparison, the day with the most thefts in 2013 was Aug. 12, with 2,316. The least amount of thefts occurred on Christmas Day, at 1,224. Maybe the thieves were too busy opening their presents.