Monday, 2 February 2015
There were 28.4m tweets about Super Bowl sent during the live TV screening
"All night, the conversation around #SB49 dominated Twitter. Over 28.4 million global Tweets containing terms related to the game and halftime show were sent during the live telecast (from kickoff through 30 minutes after the clock expired). #SB49 was the most Tweeted @SuperBowl ever, surpassing last year’s game."
Source: Twitter Blog, 2nd February 2015
Earlier - 24.9m in 2014