[Zope] Date calculation bug

[Michel]

	Hello,

I execute this DTML Method :

<dtml-var standard_html_header>
<dtml-call "REQUEST.set('xdate', ZopeTime())">
<dtml-call "REQUEST.set('xdate2', xdate + 0.020832)">
Now       : <dtml-var xdate> <BR>
30 minutes : <dtml-var xdate2> <BR>

0.020832 is the result of (1 day / 24 hours / 60 minutes) * 30 minutes

I launched it at 10H35 :
Now : 2001/05/03 10:35:03.05544 GMT+1 
30 minutes : 2001/05/03 10:05:02.94628 GMT+1 
I received 10:05 instead of 11:05

I launched it again at 12H20 :
Now : 2001/05/03 12:20:52.6986 GMT+1 
30 minutes : 2001/05/03 11:50:52.5834 GMT+1 
I received 11:50 instead of 12:50

I think there is a bug here or I made a mistake ?

	OFFNER Michel
	IGBMC
	France