The JWS core theology is set and founded in the late 19 century Adventist movement which began in mostly in America's east coast.
Great subject to proselytize and propagate particularly for a religious publishing house but it is not supported by Scripture and is in fact an act of apostasy.
Christ has taken his heavenly throne is about to cast out Satan from the earth and destroy all who have taken him as as personal savior and made a public devotion through baptism. ... etc.
This is why the JWS teach and profess that Armageddon is imminently soon.
Why is this a false doctrine, a false teaching, a false Gospel ?
Becasue Jesus himself said that no one knows of the time not even he but only the father and his own sacred time.