Morning, afternoon, evening?

[qpurser]

In my postbit I would like to use the words "morning, afternoon or evening" depending on the time for the day. I am using postbit_legacy in vB4.

For example from 6am to 12PM I want to replace the actual time with "Good Morning", from 12pm until 4pm "Good Afternoon" and for the rest of the day "Good Evening".

What would be the the formula to calculate this and how do I store it in a variable I can use in the postbit_legacy?

Thanks for any help