[GRASS-dev] r.in.gdal: can it get&store date and sun_elevation (if available)

Hi,
i was wondering if r.in.gdal does or is able to retrieve some metadata
and store them somewhere with the imported file?

I am thinking (today) about date and sun elevation.

Several uses:
- date could be a basis to timestamp the images (in the prospect of
time handling in GRASS).
- date and sun elevation are useful for rad to reflectance conversion.

thank you,
Yann