Books like The Light of Other Days
Stephen Baxter, Arthur C. Clarke
The Light of Other Days is 316 pages, about 5 hours 48 minutes at 250 words a minute.
12 books to read next
How long each takes
The Invisible Man 3.1 h 
Timeline 9.4 h 
Behold the Man 2.6 h 
The Time Traveller's Almanac 17.6 h 
Novels 5.9 h 
The Story Of Martha 4.7 h 
2001 4.4 h 
Before the Coffee Gets Cold 4.4 h 
The Island of Dr. Moreau 3.1 h 
Siete Breves Lecciones de Física 1.6 h 
Kindred 5.3 h 
2010, Odyssey Two 5.6 h Bar height shows length. Estimated at 250 words a minute.