Help - Hours intervals problem

[Mic docw@globetrotter.net]

Hi,

I'm struggling with the following problem and after days I feel it's
time to seek help.

I have 2 datetime (time) variables:

Dim BeginHour As DateTime
Dim EndHour As DateTime

Dim Period1, Period2, Period3 As String

I have these periods:

00:00 to 07:00 'night
07:00 to 19:00 'day
19:00 to 24:00 'evening

I have to calculate:
1)How many periods in the preceding list BeginHour and EndHour cover.
2)Associate different strings to each period covered:

Example:
BeginHour = "23:00:00"
EndHour = "01:00:00"

In that case:
Period1 = "evening"
Period2 = "night"
Period3 = ""

But it's really with the following that I have problems:

BeginHour = "01:00:00"
EndHour = "23:00:00"

In that case, result should be:
Period1 = "night"
Period2 = "day"
Period3 = "evening"

I can't figure out how to do it and this is where I need your help.

Thanks,

ML