Where are the breaks? Are the hours newscast compatible?

Yes. Each hour will be delivered as five soundfiles-
1 Billboard/Intro 1:00*
2 Segment A 23:00
3 Break 1:00
4 Segment A 29:00
5 Promo 0:30

(Sound is out 1-second before the end of each above file.)

* The Billboard is designed so it can work either before the news,
or directly before the First Half.