When not in the calendar's timezone and local time crosses over midnight, the calendar times become unclear

[Mystimorphix]

I set the calendar timezone to UTC from Dec 11 to Dec 17 from 00:00 to 00:00 (so the full day for all days), but when I view it in my own timezone (UTC-6) the times say from 18:00 to 18:00. It is unclear that this starts on Dec 10 at 18:00 and ends on Dec 11 at 18:00.

I would like to propose that, in the cases that the times cross over midnight for the local timezone, that the invalid portions of the day are grayed out so that respondents are unable to select those times. Then the days could be split. So for my example, the times from 00:00 to 18:00 on Dec 10 and from 18:00 to 00:00 on Dec 17 would be grayed out in my timezone.