Whether the block's start and end fall on the same calendar day.
Drives the end-time format: a same-day range shows only the time on its right half, so the date
is not repeated. An incomplete range counts as same-day, since there is no second date to show.
Whether the block's start and end fall on the same calendar day.
Drives the end-time format: a same-day range shows only the time on its right half, so the date is not repeated. An incomplete range counts as same-day, since there is no second date to show.