Adjective order: news of the past three/three past hours

[Tung Quoc]

Please read:

1. This is the news of the past three hours.

2. This is the news of the three past hours.

I think both are correct. How about your opinion? What is the rule?

Quoc

[Mister Micawber]

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The past three hours. Here, the three hours is a single hunk of time.
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Native English teacher at Mister Micawber's