Datetime objects

[Lad]

Sybren Stuvel wrote:
> Lad enlightened us with:
> > How can I find days and minutes difference between two datetime
> > objects?
> > For example If I  have
> > b=datetime.datetime(2006, 8, 2, 8, 57, 28, 687000)
> > a=datetime.datetime(2006, 8, 1, 18, 19, 45, 765000)
>
> diff = b - a

Ok, I tried

>>> diff=b-a
>>> diff
datetime.timedelta(0, 52662, 922000)
>>> diff.min
datetime.timedelta(-999999999)


which is not good for me.

So I tried to use toordinal like this
diff=b.toordinal()-a.toordinal()

but I get 
diff=1

Why?
where do I make a mistake?
Thank you for help