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i.e. The sun is rising at 7 o'clock tomorrow.
Because we're seven hours ahead, the sun is rising by the time I finish with Greta's show. (Fox news)

In the usual context and usage, for referring to future events the present continuous is used only in the case when the preorganization or preparation is set as to the future events. (e.g.The plane is taking off at 7:00.)
The description what I just now write is concerned as the proper rule to you?

And by the rule, the first two sentences are much likely to be false and the textbook suggests so.
It says the natural phenomena are not ones being set by humans.

However, I strongly doubt that the first two sentences might be acceptable both in grammar contexts and real life uses, though it being from my speculation. What about your professional opinions?
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The sun is rising at 7 o'clock tomorrow, so we' better be on the trail by 6:30.
Because we're seven hours ahead, the sun will be rising by the time I finish with Greta's show

Those are both fine when we are stating an expected schedule: that is, the speaker knows of these events (from checking the newpaper, for instance).
Comments  
It is a new condition that I've never found in the grammar textbooks that I have now. Thank you so much.