When working late I sometimes end up working past midnight. I found it difficult to drag it past midnight (or at least confusing). I also found it confusing that the timeline does not reflect this. The events below are both 5h long, but they seem to end at the right time. Why not let the timeline "overflow" with x hours - or even better - depending on the length of the card causing the overflow.
Please see this image for further clarification:
|Tempo Products||Tempo Timesheets|