10 seconds

I am reading John "Harry Potter and the Prisoner of Azkaban." Tonight we got to the part where Harry gets to test out his new flying broom, the firebolt. I read "Harry saw the Snitch dart out behind Wood, and within ten seconds had caught it tightly in his hand." John said "What? That's like, one, two, three, four, five, six, seven, eight, nine, ten! That's fast!"