People are now watching more than 6 billion hours of video a month on YouTube, the Google-owned video service announced on its blog Wednesday afternoon. That’s twice as much as just a year ago: In May 2012, YouTube announced that its viewers were watching three billion hours of videos a month. In August, that number had grown to four billion hours. From the announcement blog post: “We recently announced that YouTube hit an incredible milestone of 1 billion unique monthly visitors, connecting 15 percent of the planet to the videos they love. And those global fan communities are watching more than 6 billion hours of video each month on YouTube; almost an hour a month for every person on Earth and 50 percent more this year than last.”