October The First Is Too Late -

First published in 1966, is a speculative science fiction novel by renowned British astrophysicist Sir Fred Hoyle. Moving beyond typical "time travel," the story explores a world fractured into coexisting temporal zones—a "geographic timeslip" where different eras of history and the future exist simultaneously on the same planet. Plot Summary

If you are looking for a physical copy, several editions are available from various merchants: October The First Is Too Late

Reverted to 1917, where World War I is actively raging. First published in 1966, is a speculative science

: Collectors can find original hardbacks for approximately $9.99 $8.49 at eBay - retrogiant . First published in 1966

Have become a "Glass Plain," a desolate, fused landscape from a far-distant future where the sun has burnt out.