Date-sorting

Hi,

i have this XML:

<?xml version="1.0" encoding="UTF-8"?>
<tdObsResults>
	<OBX ID="{550D-4965-8E7A-C2F01B8CC79" State="1"
ObservationDT="2001-11-08T08:00:00" OBS="a"/>
	<OBX ID="{8A3F7D3E-550D-4965-C2F01B8CC79" State="1"
ObservationDT="2001-12-08T08:00:00" OBS="b"/>
	<OBX ID="{8A3F7D3E-550D-8E7A-C2F01B8CC79" State="1"
ObservationDT="2001-11-11T08:00:00" OBS="c"/>
	<OBX ID="{8A3F7D3E-550D-C2F01B8CC79" State="1"
ObservationDT="2001-12-09T08:00:00" OBS="d"/>
	<OBX ID="{8A3F7D3E-550D-4965-8E7A-C2F01B8CC79" State="1"
ObservationDT="2001-10-08T08:00:00" OBS="e"/>
	<OBX ID="{8A3F7D3E-550D-4965-C2F01B8CC79" State="1"
ObservationDT="2001-09-08T08:00:00" OBS="f"/>
	<OBX ID="{8A3F7D3E-550D-4965-8E7A" State="1"
ObservationDT="2001-11-08T18:00:00" OBS="g"/>
	<OBX ID="{550D-4965-8E7A-C2F01B8CC79" State="1"
ObservationDT="2001-11-08T10:00:00" OBS="h"/>
</tdObsResults>

But i want this sort Result (Sort-Tag is ObservationDT):

08.09.2001 	f
08.10.2001 	e
08.11.2001 	a
08.11.2001 	h
08.11.2001 	g
11.11.2001	c
08.12.2001	b
09.12.2001 	d
	

How can i sort this XML?

Thanks

with friendly regards

Asim


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