How long does it take to read Sleep Walkers?
a history of man's changing vision of the universe
Sleep Walkers by Arthur Koestler takes about 11 hours 26 minutes to read at 250 words a minute.
About 11 hours 26 minutes
A week or two of reading
First published 1959. 624 pages, about 171,600 words.
23 days at 30 minutes a day
Estimate based on 275 words per page.
At other speeds
| Slow, 150 words a minute | 19 hours 4 minutes |
| Average, 250 words a minute | 11 hours 26 minutes |
| Fast, 400 words a minute | 7 hours 9 minutes |
The page count is the median across 26 editions, so your copy may differ. How we calculate.
Subjects: Astronomy, Cosmology, History, History of controversy, Religion and science, Philosophy, history
