Richard,
Just finished the recently purchased Calendar Seminar.  I built mine in Access 2010, vs you doing it in 2007.  I don't know if this has a bearing on my question.

I noticed that in the CalendarT you would sometimes just enter a date (9/7/2012), sometimes a date/time (9/8/2012 8am). When you opened the calendar, your plain dates would show as 9/7/12 0000 and it would show on the correct date.
When I enter just a date, the date in question shows up on the date I typed AND on the previous date.  So 9/7/2012 would show as 9/7/2012 0000 ON 9/7, and it would also show up on 9/6!

Since I am using this for personal use, many times I don't need a time.  So I want to just pick a date and keep on trucking.  I don't want to have to enter a fictitous time.  But, I want to maintain the time functionality when I do have a specific need, like "DR X @ 2:15".
Can you think of something I've done wrong, or is this a 2010 quirk?

Thanks,
Don

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Reply from Richard Rost:

Make sure you are displaying dates that are GREATER THAN OR EQUAL TO StartDate and LESS THAN (but NOT equal to) the EndDate. Like:

>=StartDate AND
If you used ">=S AND <=E" that would cause those midnight dates to show up on both calendars.