Q:

How to add Time info to GeoTiff served from Geoserver?

I have a geotiff file (somedata.tif) that I want to serve from geoserver wms associated with the time 10/22/2010 12:00:00. 
I'm currently using a geoserver raster data source of type GeoTiff pointed to somedata.tif with a layer pointed at that data source.  Using this configuration, I can successfully serve the image, with no time information.
I'm looking for functionality that would be similar to mapserver where I set wms_timedefault=10/22/2010 12:00:00.
My desired end result is an http header like this:
Warning: 99 Nearest value used: TIME=2010-10-22T12:00Z

Can I add time information to a Geotiff data source in geoserver v2.0.2?  Does it belong in somedata.tif? Does it belong in my source or layer configurations?
My GIS vocabulary isn't 100% so if I need to clarify anything, please let me know.

A:

After some research.  Geoserver does not currently support queries based on Time where Time is set to use nearestValue.

