The phrase "some hour" is correct and usable in written English.
It is typically used to mean a certain unspecified hour, for example, "I will be there at some hour tomorrow."
"The Honeymooners" and "I Love Lucy," for example, will probably play at some hour, somewhere, forever.
I was making $40,000 an episode on some hour show, and I couldn't get an audition for a two-line part in a film called "Guarding Tess".
"I have wrought my simple plan If I give some hour of joy To the boy who's half a man Or the man who's half a boy".
We looked up at the planes, as they climbed over the beach, glimpsed their swollen bellies pregnant with bombs that, in some hour of the coming day, would be loosed upon Kobe or Yokohama or Tokyo.
While his handler did not find any drugs in the defendant's vehicle (he did, however, find plenty of paraphernalia for making methamphetamine), it is probable that Aldo smelled "residual odor" of drugs left on the door handle some hour, day, or two days before.
Poor service is raised to an art form, but the 12 tables are full from the moment Peter's serves its first espresso in the morning until the draft beer spigots run dry at some hour that required more perseverance to ascertain than I had.
I did 80-some hours -- two years -- getting my teaching certificate.
"Some hours later, I was allowed to enter my premises.
Some hours later, he had a weightier matter to consider.
Some hours before sunrise, the tiger found himself in the abandoned market at Kalinia.
Some hours earlier, a magnitude-7.5 earthquake had struck the nearby city of Tangshan.
