Can I split up time phrases and adverbs?

Question

If there is more than one part to a time phrase (e.g. both 今天 and 八点) can I place one of them before the subject and one after? Is there any situation in which this would be okay?

他今天八点要去看电影 (not split)

vs

今天他八点要去看电影 (split)

On a similar note, if there is both a time expression and another adverb, can I split those up?

电影六点就开始了 (not split)

vs

六点电影就开始了 (split)

Answer 1

Yes you can, when you split it like that, you emphasize the time, when your friend run out of the time, you can use it to push them.

Answer 2

My gut feeling is :

“今天他八点” emphasizes the condition of "今天" . “六点电影就开始了” emphasizes “六点”.

But my second thought is :

Even when i want to emphasize “今天” or "六点"，i may still use “他今天八点” and "电影六点就" sometimes.