Ok Cetin,
Thank you for your help.
I would like to thank the other guys who have answered my question too.

>>Hi all
>>
>>I have tried it with VFP 6, 7, 8 and 9. All versions returning the same result. Copy and Paste the following code on a new program window and then execute it.
>>
>>Anyone know what is happening? Or maybe this is just a bug?
>>Thank you all
>>
>>
>>

>>set date british
>>clear
>>
>>*****************************
>>* Sets start and end datetime
>>*****************************
>>m.T_START = ctot("08/01/2005" + " " + "05:15")
>>m.T_END = ctot("08/01/2005" + " " + "05:20")
>>
>>*****************************************
>>* Find and show the difference in seconds
>>*****************************************
>>m.DIFF_SECONDS = m.T_END - m.T_START
>>? m.DIFF_SECONDS					&& Prints 300
>>
>>*****************************************
>>* Find and show the difference in minutes
>>*****************************************
>>m.DIFF_MINUTES = (m.DIFF_SECONDS / 60)
>>? m.DIFF_MINUTES					&& Prints 5,0000
>>
>>**********************************************************
>>* Now the weird thing. Shows the integer of m.DIFF_SECONDS
>>**********************************************************
>>? int(m.DIFF_MINUTES)					&& Prints 4 (Should be 5, not 4!!!)
>>

>
>It's a known thing. Datetime stores milliseconds.
>? m.DiffSeconds / 1.000000
>
>m.DIFF_SECONDS = round(m.T_END - m.T_START,0)
>Cetin