- When do I get off, by starting at Time X
- just Add X hours to starting Time
- When do I have to start, to get off at Time X
- subtract X hours from End Time
- How many hours us between X and Y
- (already): Diff between start and end
- Get off calc
- Get in calc
- Time between calc
- Configurable, saveable state, hours in work day
- Add lunch break in between