During the mid-1990s, U.S. children's cable channel Nickelodeon helped popularize the superstition in the United States as part of its "Nick Days," where during commercial breaks it would show an ad about the significance of the current date, whether it be an actual holiday, a largely uncelebrated unofficial holiday, or a made-up day if nothing else is going on that specific day (the latter would be identified as a "Nickelodeon holiday"). Nickelodeon would promote the last day of each month as "Rabbit Rabbit Day" and to remind kids to say it the next day, unless the last day of that specific month was an actual holiday, such as Halloween or New Year's Eve.[11][12] This practice stopped by the late 1990s.