Hypnobrai Day marks the anniversary of the first United States premiere of the Ninjago: Masters of Spinjitzu episodes "Rise of the Snakes" and "Home" on Cartoon Network, both of which first aired as "back-to-back" specials on December 2nd, 2011. Hence, Hypnobrai Day is celebrated on December 2nd of every year. 2016 marked the fifth year anniversary of the episodes' first U.S. airing, as well as the five year anniversary of the entire first season of the series. Unlike Pythor Day (February 1st) and Overlord Day (October 3rd), Hypnobrai Day is not a widely-known celebration among the current Ninjago community. Hypnobrai Day was also not brought to the attention of the Ninjago community or celebrated by the Ninjago community until the year 2016.
Among many different ways to celebrate Hypnobrai Day, the main and first logical way to celebrate is to watch both "Rise of the Snakes" and "Home" on DVD. Fans may also create stop-motion videos featuring the original LEGO Hypnobrai Minifigures.