From Twitter blog:
The new record more than doubles the previous one of 3,283 TPS, set during Japan’s victory over Denmark in last summer’s World Cup. In fact, on New Year’s Eve, that all-time TPS record was shattered more than 68 separate times within a single 3-minute period.
The video above visualizes New Year’s Eve Tweet data across the world. The circles get bigger as more Tweets are being sent at that moment, which means it’s probably midnight in that timezone. Notice that the circle over Tokyo gets so big it nearly swallows Japan.